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The Gini coefficient measures income inequality on a scale from 0 to 1, based on the Lorenz Curve. On this scale 0 represents perfect equality with everyone having the exact same income and 1 represents perfect inequality with one person having all income (Scores are then commonly multiplied by 100 to make them easier to understand).[41] According to the United Nations (UN), gini index ratings for countries range from 24.7 in Denmark to 74.3 in Namibia. Mostpost-industrial nations had a gini coefficient in the high twenties to mid thirties. The UN places the US Gini index rating at 40.[42] Since the Census Bureau started measuring the Gini coefficient in 1967, it has risen by 20% for full-time workers and 18% for households. Among households, the index has risen from 39.7 to 46.9,[43] from 31.4 to 42.4 among men and from 29.8 to 35.7 among women.[44] According to Gini coefficient data, income inequality in the U.S., already among the highest in the post-industrial world,[16] has risen considerably between 1967 and 2005 among households[43] and individuals.[44]
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