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Comparing Global Trends in Wealth and Income Inequality
James Davies and Anthony Shorrocks
13 September 2018
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Has inequality been increasing in recent years?
Yes/no
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Has inequality been increasing in recent years?
• Economic variable: income, wealth, …
• Area coverage: world, region, country, …
• Time period: 1900-2018, 1960-2018, 2000-2018, …
• Inequality measure: Gini, top 10%, top 1%, mean/median
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Objective
To compare global inequality trends using two huge synthetic data sets:
Wealth sample for each country and year 2000-2017
• wealth = real property + financial assets – debts
• compared across countries using official exchange rates
• comparisons for adults
• top tail adjustment for missing wealth
Income sample for each country and year 1960-2015
• Income = net household income per capita (alt: gross income, consumption)
• compared across countries using official exchange rates (alt: PPP)
• comparisons for individuals
• no top tail adjustment (yet)
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Comparison 2015: World
mean 10,228 52,275
median 2,772 3,596
Gini 73.3 91.2
top 10% 61.5 87.1
top 1% 20.4 49.2
net income
per capita
net wealth
per adult
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Income Inequality
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Wealth Inequality
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