"In 2007 U.S. residents experienced an estimated 23 million violent and property victimizations, according to the National Crime Victimization Survey (NCVS). Criminal victimizations in 2007 included approximately 5.2 million violent crimes and 17.5 million property crimes. The rates for every major violent and property crime measured by the NCVS in 2007 were at or near the lowest levels recorded since 1973, the first year that such data were available. The overall victimization rate in 2007 for violent crimes was 20.7 per 1,000 persons, which was not significantly different from the 2005 rate of 21.1 per 1,000 persons (table 1). For property crimes, the overall rate of 146.5 per 1,000 households in 2007 was somewhat lower than the rate of 154.2 per 1,000 households in 2005. As in previous years, about half of the violent crimes and almost two-thirds of the property crimes measured by the NCVS in 2007 were not reported to police."
Bureau of Justice Statistics: NCJ 224390
U.S. Department of Justice, Bureau of Justice Statistics: http://www.ncjrs.gov/