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. 2011 Mar 7:685–729. doi: 10.1007/978-94-007-1315-4_13

Table 13.2.

Various measures of extreme population aging based on population data, 1900–2005, and projections, 2010–2050, by decades

Year Percent 85 +  of total pop. Percent 85 +  of 65 +  Percent 100 +  of total pop. Percent 100 +  of 85 + 
1900 0.2 4.0 NA NA
1910 0.2 4.2
1920 0.2 4.3 Inline graphic  | 
1930 0.2 4.1
1940 0.3 4.0  |   | 
1950 0.4 4.7  |   | 
1960 0.5 5.6
1970 0.7 7.5  |   | 
1980 1.0 8.8 0.01 1.0
1990 1.2 9.9 0.01 1.2
2000 1.5 12.1 0.02 1.2
2005 1.7 13.8 0.02 1.3
Projections a
2010 2.0 15.2 0.04 1.9
2020 2.2 13.3 0.07 3.3
2030 2.6 13.4 0.11 4.2
2040 3.9 19.2 0.15 3.8
2050 5.0 24.1 0.27 5.5

Source: U.S. Census Bureau: Internet, www.census.gov; various Census Bureau reports NA reliable figures not available for years from 1900 to 1970 aU.S. Census Bureau middle series projections, based on 2000 census