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 decline between November 2004 and February 2005 is due to disuse of some titles in February.
| Month | Number titles (those used > 1) | Number of notes |
|---|---|---|
| November 2003 | 193 (161) | 42,237 |
| November 2004 | 256 (215) | 99,026 |
| February 2005 | 244 (213) | 106,053 |
