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.
For females and males, the black curve is for a household income <$22,500, the red curve is $22,500–$59,999, and the blue curve is ≥$60,000.
