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.
The proportion of facilities that were acquired each year varied between 1.1% and 7.2% during the observation period. The proportion of facilities that closed each year varied between 0.8% and 2.2%.
