FIGURE 1-1 1970 age distribution by population.

SOURCE: U.S. Census Bureau, International Database. Available: <http://www.census.gov/ipc/www/idbpyr.html (accessed December 2005).

FIGURE 1-2 2000 age distribution by population.

SOURCE: U.S. Census Bureau, International Database. Available: <http://www.census.gov/ipc/www/idbpyr.html (accessed December 2005).

tion will be nearly vertical, with similar numbers of people at every age through midlife and much larger numbers of older adults than at any previous time; see Figure 1-3. By 2030, it is estimated that there will be 12.1 million women and 7.4 million men ages 80 or older, more than twice as many as in the year 2000. In each of the three pyramids, the number of older women is larger than the number of older men.



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