Silver Book Fact
Number of people 65+ projections, 1900-2050

Number of people age 65 and over, by age group, selected years 1900-2006 and projected 2010-2050
Federal Interagency Forum on Aging-Related Statistics. Older Americans 2008: Key Indicators of Well-Being. Washington, D.C.: U.S. Government Printing Office; 2008. https://agingstats.gov/docs/PastReports/2008/OA2008.pdf