While working or on duty, U.S. residents experienced 1.7 million violent victimizations annually from 1993 to 1999 including 1.3 million simple assaults, 325,000 aggravated assaults, 36,500 rapes and sexual assaults, 70,000 robberies, and 900 homicides. Workplace violence accounted for 18% of all violent crime between 1993 to 1999.