A. Coefficient of Variation

CoV can be calculated across countries each year for total alcohol consumption volume and for the share of each of the three main beverage types in the total volume of recorded alcohol consumption. CoV measures the concentration of data around the mean value: If it declines over time, this serves as a simple indicator of cross-country convergence. It is calculated for each year by taking the level of consumption per capita across countries and dividing the standard deviation of the series, σ _t , by the mean value of the sample, $ {\bar X}_t $ :

(1) $$CoV_t = \displaystyle{{\sigma _t} \over {{\bar X}_t}}. $$

B. Beverage Consumption Intensity Index

The beverage consumption intensity index indicates the importance in a particular year of one type of alcoholic beverage in a country's alcohol consumption relative to the average share of that beverage in alcohol consumption by all countries of the world. We thus define the consumption intensity index for country i as

(2) $$V_{in} = \displaystyle{{\,f_{in}} \over {\,f_n}}, $$

where there are i = 1, … , 53 (or 85) countries, and n = 1, 2, 3 beverages corresponding to wine, beer, and spirits. We define f _in as the fraction of wine, beer, or spirits consumption in total national alcohol consumption volume or expenditure in country i, such that 0 ≤ f _in  ≤ 1 and $\sum\nolimits_{n = 1}^3 {f_{in} = 1} $ . This is divided by the fraction for that same beverage in world total alcohol consumption, f _n , with 0 ≤ f _n  ≤ 1 and Σ _n f _n  = 1. For brevity, we tabulate weighted averages of intensity indexes for groups of countries, using as weights each country's consumption of that beverage as a fraction of the group's total consumption of that beverage.

C. Alcohol Consumption Mix Similarity Index

The similarity index is a variant of an index developed by Anderson (Reference Anderson2014a) that in turn is adapted from indexes introduced by Griliches (Reference Griliches1979) and Jaffe (Reference Jaffe1986). Anderson (Reference Anderson2014a) uses it to measure the extent to which the wine grape varietal mix in the vineyards of one region or country matches that of another region or country or the world. Here, we adapt it for the purposes of comparing the beverage consumption mix of any one country with that of any other country or the average for the world.

The index uses vector representation to project combinations of variables, with lengths determined by the shares of wine, beer, and spirits in a country's total alcohol consumption volume or expenditure. The vector f _im is again the fraction of beer, wine, or spirits consumption in the national alcohol consumption volume or expenditure in country i, such that these fractions are between 0 and 1 and total 1. The index is defined as

(3) $$\omega _{ij} = \displaystyle{{\sum\limits_{m = 1}^M {\,f_{im} f_{\,jm}}} \over {\left( {\sum\limits_{m = 1}^M {\,f_{im} ^2}} \right)^{1/2} \left( {\sum\limits_{m = 1}^M {\,f_{\,jm} ^2}} \right)^{1/2}}}, $$

where i = 1, … , 53 (or 85) countries, j = 1, … , 53 (or 85) countries, and m = 1, 2, 3 beverages corresponding again to wine, beer, and spirits; therefore, M = 3. This makes it possible to indicate the degree of beverage mix “similarity” of any pair of countries. The index also can be generated for each country relative to the average of a sample of countries or of all the world's N countries. In short, ω _ij measures the degree of overlap between f _i and f _j . The numerator of Equation (3) is large when i’s and j’s beverage mixes are very similar. The denominator normalizes the measure to unity when f _i and f _j are identical. Hence, ω _ij is close to 0 for pairs of countries with little similarity in their beverage mix and 1 for pairs of countries with identical beverage consumption mixes. For cases between those two extremes, 0 < ω _ij  < 1.

This index is conceptually similar to a correlation coefficient. Like a correlation coefficient, it is completely symmetrical in that ω _ij  = ω _ji . Thus, the results can be summarized in a symmetrical matrix plus a vector that reports the index for each country relative to that for the world (as reported in Holmes and Anderson, Reference Holmes and Anderson2017).

In a hypothetical two-beverage case, where country i has 50% of its alcohol consumption consisting of beer and country j has 30%, the index of consumption similarity is the cosine of the angle between the two vectors in Figure 1. Therefore, differences can be judged by the angular separation of the vectors f _i and f _j for the two countries (Jaffe Reference Jaffe1986).

Source: Authors’ compilation.

Figure 1 Angular Separation Between Two Countries (i and j), Each Consuming Just Two Beverages (Beer and Wine)

It is possible to generate the similarity index for groups of countries by again using as weights each country's consumption of that beverage as a fraction of the group's total consumption of that beverage.

A. Alcohol Consumption and Income

One way to begin to look for convergence in alcohol consumption patterns is to plot consumption per capita against real income per capita. That is done in Figure 2 for 53 countries and residual regions spanning the world from 1961 to 2014, showing the volume of total alcohol consumption as well as of wine, beer, and spirits, respectively. As demonstrated by each beverage, the volume of consumption first tends to rise with per-capita incomes but then falls. The peak consumption occurs at a real per-capita income (in 1990 International Geary-Khamis dollars) of $16,900 in the case of all alcohol. That is just slightly above the average per-capita income of Western Europe in 1990. The peak consumption occurs at $15,100 for wine, $18,100 for beer, and $16,350 for spirits. These inverted U-shaped figures suggest that income convergence alone (the gradual catching up of developing countries to the per-capita incomes of high-income countries) does not necessarily lead to convergence in alcohol consumption patterns based on per-capita volumes.

^a Real GDP per capita is in 1990 International Geary-Khamis dollars from www.ggdc.net/maddison/maddison-project/data.htm, updated to 2014 by taking the latest PPP estimates in 2011 dollars from the World Bank's International Comparison Project at http://icp.worldbank.org and splicing them to the Maddison series. The curved line is a fitted quadratic regression line. Source: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017).

Figure 2 Relationship Between Recorded Alcohol Consumption Volume and Real GDP per Capita, 53 Countries/Regions,^a 1961–2014 (One Dot per Country-Year)

B. Long-term Trends in Alcohol Consumption per Capita, Total, and by Type

Trends in the volume of total alcohol consumption per capita and in shares of overall alcohol consumption volume due to wine, beer, and spirits are shown in Tables 1 and 2 for a sample of high-income countries for which we have data from the late 19th century and in Table 3 for the world's 53 countries/regions since 1961. For the larger set of countries, consumption-weighted averages are shown for seven regions and for the world as a whole in the final rows of Table 3.

Table 1 Total Alcohol Consumption Volume per Capita, ^a High-Income Countries, 1888–2014 (Litres of Alcohol per Year)

^a On average, the alcohol content by volume is assumed to be 4.5% for beer, 12% for wine, and 40% for spirits. Ready-to-drink spirits mixers are converted to spirits, assuming their alcohol content is 5%.

^b 1898–1902.

^c 1920–1923.

Source: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017).

Table 2 Shares of Wine, Beer, and Spirits in Total Alcohol Consumption Volume, High-Income Countries, 1888–2014 (%, 5-Year Averages)

^a 1898–1902 ^b 1920–1923

Source: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017).

Table 3 Alcohol per-Capita Consumption Volume and Shares of Beer, Wine, and Spirits, ^a 53 Countries, 5 Regions, and the World, 1961–1964 and 2010–2014 (LAL and %)

^a These data are volume-based in litres of alcohol (LAL) per year, 4- or 5-year averages.

^b The bold numbers indicate which beverage has the highest share in total alcohol consumption volume in the period shown.

^c “O” refers to “Other” for the residual sub-group of countries for each of the five geographic regions that is not separately identified (each sub-group is treated like an extra country).

Sources: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017).

For the majority of the 11 countries in Table 1 with data back to the 19th century, the alcohol consumption was greater in the 1960s than around 1890. For all but France and Italy, consumption rose even more by the 1980s, but then in all 11 countries, the total alcohol consumption per capita fell over the subsequent three decades to well below the unweighted average in the 1970s and 1980s. Even in the global database, which includes numerous developing and transition economies, the weighted average was almost the same in 2010–2014 as it was in 1961–1964 (last row of Table 3), despite having been higher than both of those period averages in each of the intervening decades. This is consistent with the inverted U-shaped trend of Figure 2(a).

Table 2 shows that the mix of alcohols was very different across the 11 high-income countries up to the 1960s, especially with respect to wine, which ranged from 2% to 87% of all national alcohol sales during 1961–1964, but also for beer (3%–81%) and spirits (10%–78%). By 2010–2014, the ranges had narrowed somewhat for beer (19%–53%) but less so for wine (5%–59%) and hardly at all for spirits (11%–74%).

The mix across the global database changed very substantially over the past 55 years: Wine's share more than halved from 34% to 15%; beer's rose by more than one-third, increasing from 29% to 42%; and spirits’ rose only slightly, from 37% to 43% (final row of Table 3). For 11 countries, wine remained the main type of alcohol consumed; for 12 countries, beer continued to dominate; and for 10 countries, spirits retained the largest share (see the bold numbers in Table 3).

However, it is not possible to conclude from simply observing these per-capita volume trends whether alcohol consumption patterns are converging across countries – hence the need for better indicators, to which we now turn.

C. Coefficient of Variation

Since 1961, CoV has fallen for all three beverage groups, which implies some convergence. This trend can be seen in Figure 3, where CoV across the full set of countries is shown for the per-capita total volume of alcohol consumption and for the shares of wine, beer, and spirits within that total for each country. The coefficient for the total volume of alcohol consumption has nearly halved over the last half century, declining steadily throughout the period. There has been very little decline in the coefficient for the share of spirits, but there has been a very steep decline for beer (falling from 0.8 to 0.4), while that for wine has fallen by more than one-quarter.

Sources: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017) and tabulated in Holmes and Anderson (Reference Holmes and Anderson2017).

Figure 3 CoV in Total Alcohol Consumption per Capita and in Shares of Each Beverage in That Total Consumption, across 53 Countries/Regions, 1961–2014

D. Beverage Consumption Intensity Index

To examine trends in the beverage consumption intensity (and mix similarity) indexes, it is helpful to divide into groups our 48 countries plus one residual sub-group of countries for each of five geographic regions (also called “countries” hereafter, for simplicity), yielding a total of 53. Two groupings are used here. One is according to which of the three beverages has the highest share of the volume of alcohol consumption in 1961–1964. It turns out those three groups each have almost the same number of countries (19 wine-focused and 17 each for beer-focused and spirits-focused; see footnote b of Figure 4). The other grouping is according to geography, with six regions identified. Each region includes a varying number of countries, ranging from 17 in Western Europe to 11 in Asia, 9 in Eastern Europe and Central Asia, 6 in Latin America, 6 in Africa and the Middle East, and 2 in North America. One “country” in all but the last of those regions is the weighted average of all countries in the region that have not been separately identified. Australasia is omitted for space reasons.

^a The intensity index is defined as the fraction of wine, beer, or spirits consumption in total national alcohol consumption volume in country i divided by the fraction for that same beverage in world total alcohol consumption. ^b Wine-focused: Algeria, Argentina, Bulgaria, Chile, Croatia, France, Georgia, Greece, Hungary, Italy, Moldova, Morocco, Portugal, Romania, Spain, Switzerland, Tunisia, Turkey, Uruguay; Beer-focused: Australia, Austria, Belgium-Luxembourg, Canada, Denmark, Germany, Ireland, Malaysia, Mexico, Netherlands, New Zealand, Singapore, United Kingdom, United States, Other Eastern Europe, Other Latin America, Other African and Middle East; Spirits-focused: Brazil, China, Finland, Hong Kong, India, Japan, Korea, Norway, Philippines, Russia, South Africa, Sweden, Taiwan, Thailand, Ukraine, Other Western Europe, Other Asia. Sources: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017) and tabulated in Holmes and Anderson (Reference Holmes and Anderson2017).

Figure 4 Wine, Beer, and Spirits Consumption Volume Intensity Indexes^a for Three Sub-sets of 53 Countries/Regions, by Main Focus in 1961–1964,^b 1961–2014

The decrease in the share of wine in the overall volume of global alcohol consumption has been faster than the decrease in wine's share of consumption in a number of wine-focused countries, so those countries’ groups’ wine consumption intensity index has risen over the past half century, from 2.2 to around 3.0. Those groups’ spirits intensity index has not risen much (at around 0.5), but their beer intensity index has nearly doubled, from less than 0.4 to 0.75 (Figure 4(a)).

For the beer-focused countries, their beer intensity index has nearly halved, from close to 2.0 down to 1.2, while their wine intensity index has trebled and is now slightly above that for beer, and their spirits intensity index has fallen from just below to a little further below 1.0 (Figure 4(b)).

For the spirits-focused countries, their spirits intensity index has nearly halved in falling to 1.25, their beer intensity index has risen from 0.5 to 0.9, and their wine intensity index trend has remained flat at a little below 0.5 (Figure 4(c)).

Turning to the regions (Figure 5), the clearest convergence on intensity indexes of unity for the three beverages is found in Eastern Europe, and the next clearest region is North America. In Western Europe, by contrast, the beer and spirits intensity indexes have changed little from around 1.0 and 0.5, respectively, while the wine intensity index has risen from 1.6 to 2.7. The indexes for Africa and the Middle East also have diverged, with beer's rising further above 1.0 and spirits’ falling further below 1.0, while wine's has remained just below 1.0. In Latin America, wine and spirits have converged to just below 1.0 (wine from above, spirits from below), while beer has risen from 1.0 to 1.5. And in Asia, beer's index has doubled to 0.8, the spirits index has fallen from 2.4 to 1.5, and the wine index has risen from just above zero to 0.2.

Sources: Compiled from data in Anderson and Pinilla (2017) and tabulated in Holmes and Anderson (2017).

Figure 5 Wine, Beer, and Spirits Consumption Volume Intensity Indexes for Three Sub-sets of 53 Countries, by Region, 1961–2014

These volume indexes suggest there are still major differences across these regions in their consumers’ beverage focus based on volume. But what do value-based indexes suggest, given that, as shown in Figure 6, tax-inclusive retail prices of alcoholic beverages vary enormously across these regions? We do not have expenditure data for all countries for the full period since 1961, but we do have them for recent years. Table 4 shows the differences by region between the consumption volume and value intensity indexes for the period 2013–2015. For three of the regions (Western Europe, Eastern Europe, and North America), all three value intensity indexes are closer to unity than are their volume indexes; for two regions (Australasia and Africa and the Middle East), two of the three value indexes are closer to unity than are their volume indexes; and for the other two regions, one of the three value indexes is closer to unity than their volume indexes. This comparison suggests that part of the reason for the cross-country variation in volume intensity indexes has to do with the variation in national average retail beverage prices.

Source: Compiled from data in Holmes and Anderson (Reference Holmes and Anderson2017).

Figure 6 Weighted Average Tax-Inclusive Retail Prices of Alcoholic Beverages, by Region, 2013–2015

Table 4 Wine, Beer, and Spirits Consumption Volume and Value Intensity Indexes, ^a by Region, 2013–2015

^a The intensity index is defined as the fraction of wine, beer, or spirits consumption in total national alcohol consumption volume in country i divided by the fraction for that same beverage in world total alcohol consumption.

Source: Compiled from data in Holmes and Anderson (Reference Holmes and Anderson2017).

E. Alcohol Consumption Mix Similarity Index

The alcohol consumption mix similarity indexes for various country groups are plotted in Figure 7. The beer- and spirits-focused countries converged rapidly toward the world average (that is, the indexes approached 1.0) from the early 1960s to the mid-1980s and then moved more slowly in the next two decades. By contrast, the consumption mix similarity index for the wine-focused countries has not converged over this period. This result again reflects the fact that many of the wine-focused countries have reduced the share of wine in their consumption mix less than in other areas of the world. This is the same conclusion that we reached above by inspecting the intensity index for wine-focused countries in Figure 4(a).

Sources: Compiled from data in Anderson and Pinilla (Reference Anderson and Pinilla2017) and tabulated in Holmes and Anderson (Reference Holmes and Anderson2017).

Figure 7 Consumption Mix Similarity Index, Volume-Based, by Sub-sets of 53 Countries/Regions, 1961–2014

The same convergence toward unity in consumption mix similarity indexes is evident when countries are differentiated by geographic region, as in Figure 7(b). The convergence has been fastest for Asia and Latin America, albeit from a low base, but it is also evident for the other five regions, including North America and Eastern Europe, even though their indexes were already above 0.9 in the 1960s.

Even over the relatively short period of the 21st century for which we have data for 80 countries plus the 5 residual regions, as shown in Figure 8(a), the distribution of similarity indexes is becoming more skewed over time toward unity.

Source: Compiled from data tabulated in Holmes and Anderson (Reference Holmes and Anderson2017).

Figure 8 Convergence of Volume- and Value-Based Similarity Mix Indexes for All 85 Countries/Regions, 2001–2015

The volume-based distributions are comparable with those for value-based similarity indexes for the same three 5-year periods. The latter distributions are even more skewed toward unity than the volume-based similarity indexes (compare Figures 8(a) and 8(b)). Together, these findings indicate a general if not rapid global convergence in national beverage mixes.

F. Alcohol Consumption and Aggregate Expenditure

The moderating impact on indicators of the differences across countries in retail prices of alcoholic beverages (both absolute and relative; see Figure 6) suggests the need to revisit the finding from Figure 2 of an inverted U-shaped relationship between national per-capita alcohol consumption volume and real GDP per capita. This is done for our larger sample of 85 countries for the years 2001–2015 in Figure 9 for volumes and values of total alcohol consumption per capita, which are plotted against aggregate expenditures per capita in 2015 US dollars. An inverted U-shape prevails for volume but not for value of alcohol consumption as national aggregate expenditure rises.

^a Excluding the five residual regions. Expenditures are inflated to 2015 dollars using the US CPI, 2015 = 1.00. Source: Compiled from data tabulated in Holmes and Anderson (2017)

Figure 9 Relationship Between per-Capita Aggregate Expenditures and Recorded Alcohol Consumption Volume and Value, 80 Countries,^a 2001–2015 (One Dot per Country-Year)

Also revealed in Figure 9 is the wide variance in per-capita alcohol expenditures across equally affluent countries. Partly that is due to differences across countries in value-added or goods-and-services taxes and in alcohol excise or consumption taxes (Table 5).

Table 5 Per-Capita Income, Excise Taxes on Alcohol Consumption by Type, and VAT/GST, High-Income Countries, 2014 (% Ad Valorem Equivalent)

Sources: Anderson and Pinilla (Reference Anderson and Pinilla2017) and Anderson (Reference Anderson2014b).

When the expenditure data are disaggregated into the three beverage types, Figures 10(a) and 10(b) reveal that wine and beer expenditures rise with aggregate expenditures. However, Figure 10(c) suggests that expenditures on spirits peak at an aggregate national expenditure level of US$27,800 per capita (in 2015 dollars) and decline thereafter.

^a Excluding the five residual regions. Expenditures are inflated to 2015 dollars using the US CPI. Source: Compiled from data in Holmes and Anderson (Reference Holmes and Anderson2017).

Figure 10 Relationship Between per-Capita Aggregate Expenditure and Value of Recorded Alcohol Consumption, 80 Countries,^a 2001–2015

G. Alcoholic Versus Nonalcoholic Beverages

As of 2010–2014, alcohol made up nearly two-thirds of the world's recorded expenditures on beverages, with the rest being bottled water (8%), carbonated soft drinks (15%), and other soft drinks, such as fruit juices (13%). Those beverage shares varied widely across regions (Table 6), in part because retail prices varied between countries: For all soft drinks, they ranged from an average for 2013–15 of 70 US cents per litre in Africa and the Middle East to 260 US cents in Australasia (Euromonitor International, 2016). The degree of substitutability between alcoholic and soft drink consumption may vary across countries; so too does the availability of low-cost reticulated potable water. These facts suggest further reasons to expect differences across countries in alcohol consumption volumes and mixes.

Table 6 Shares of Beverage Household Expenditure by Beverage Type, Seven Regions Spanning the World, 2010–2014 (%)

Source: Holmes and Anderson (Reference Holmes and Anderson2017).

Globally, during 2001–2015, the world's volume of alcohol consumption increased by one-quarter while that of nonalcoholic beverages rose by two-thirds. However, global retail expenditures (including taxes) on those two product groups rose by similar current US dollar amounts: 81% for alcoholic and 90% for nonalcoholic beverages (Euromonitor International, 2016). That difference between the volume and value increases for alcohol consumption is not inconsistent with the findings of the previous sub-section, in which the volume of alcohol consumption traces a much more-pronounced inverted U-shape as total expenditures rise than does the value of alcohol consumption.