Silver Book Fact
Oldest old population projections between 2010 and 2050
Between 2010 and 2050, the oldest-old are expected to increase from 15% to 24% of all older Americans. This will result in an additional 15 million oldest-old.
He W, Sengupta M, Velkoff V, DeBarros K. 65+ in the United States: 2005; 2005:23-209. https://www.census.gov/prod/2006pubs/p23-209.pdf