摘要：Older Americans have increased
steadily in number and proportion
of the total U.S. population.
The population age 65 and older
numbered 35 million in 2000 and
is expected to more than double by
2050. The older population was 12
percent of the total population in
2000 and will increase to 20 percent
by 2050. Moreover, the oldest
segment of the older population,
those age 85 and older, has been
increasing more rapidly than any
other age group.
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