NFPA's "False Alarm Activity in the U.S. 2011"
Michael J. Karter, Jr.
An in-depth report on false alarm activity and includes a table on fire department calls by type of call.
In 2011, U.S. fire departments responded to 2,383,000 false alarms. This was an increase of 9.0% from the year before. This means that one out of twelve calls responded to by fire departments were false alarms.