Figure 7.
The change in the density of the elderly population in the RSHA (a) from 1900 to 2010; (b) from 1990 to 2000; (c) from 2000 to 2010.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.