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The bar chart shows the percentage of the US population who were aged 65 and over from 1900 to 2000. The chart also divides these people into three age groups: 65 to 74, 75 to 84, and 85 and over.
Overall, the percentage of older people in the US increased a lot during the century. The 65 to 74 group was always the biggest group, but the older groups grew faster.
In 1900, only 4.1% of the population was aged 65 and over. Most of them were aged 65 to 74, at 2.9%, and 1.0% were aged 75 to 84. The percentage increased slowly to 5.4% in 1930, and then it rose more quickly to 8.1% in 1950 and 9.9% in 1970.
The total reached the highest point of 12.6% in 1990, before it fell slightly to 12.4% in 2000. The 65 to 74 group rose to 7.3% in 1990 but dropped to 6.5% in 2000. However, the 75 to 84 group continued to increase to 4.4%, and the 85 and over group rose to 1.5% in 2000, which was the highest figure for this group.