Skip to main content
. 2011 Mar 7:271–361. doi: 10.1007/978-94-007-1315-4_6
Age group Percent of all ages
2004 1999 1977
Under 65 11.7 9.7 13.0
65–74 11.7 12.0 16.2
75–84 31.4 31.8 36.0
85 and over 45.2 46.5 34.8
All ages 100.0 100.0 100.0

Source: U.S. National Center for Health Statistics/ Decker 2004; NCHS (2008)