8.1

14.6

14.6

14.3

14.0

23.0

23.4

23.2

22.6

50.4

50.3

51.1

52.2

22.2

21.3

22.1

23.0

TABLE 15.5 Share of Aggregate Income Received by Each Fifth and Top 5% of Households, 1967–2020

(Source: U.S. Census Bureau, https://www.census.gov/data/tables/time-series/demo/income-poverty/

historical-income-households.html, Table H-1, All Races.)

It can also be useful to divide the income distribution in ways other than quintiles; for example, into tenths or

even into percentiles (that is, hundredths). A more detailed breakdown can provide additional insights. For

example, the last column of Table 15.5 shows the income received by the top 5% of the income distribution.
Between 1980 and 2020, the share of income going to the top 5% increased by 6.5 percentage points (from

16.5% in 1980 to 23.0% in 2020). From 1980 to 2020 the share of income going to the top quintile increased by
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