"This report examines the causes and characteristics of fires that occur outdoors. Each year between 1996 and 1998, there were an estimated 867,300 outdoor fires in the United States-approximately half of all fires reported to fire departments. Outdoor fires resulted in approximately 850 civilian injuries, 30 civilian deaths, and $55.3 million property loss."
U.S. Fire Administration: http://www.usfa.dhs.gov/
Topical Fire Report Series (January 2002), v.2 no.19