"In 2016, about half (51%) of serious violent crimes, including rape or sexual assault, robbery, and aggravated assault, were reported to police [...]. In comparison, 42% of all violent crimes and 36% of property crimes were reported to police. Data are from the Bureau of Justice Statistics' (BJS) National Crime Victimization Survey (NCVS), which collects information on nonfatal crimes against persons age 12 or older from a nationally representative sample of U.S. households. The NCVS measures violent crimes, which include rape or sexual assault, robbery, aggravated assault, and simple assault. Property crimes include household burglary, motor vehicle theft, and theft. The survey also measures personal larceny, which includes pickpocketing and purse snatching."
Bureau of Justice Statistics: NCJ 251150
U.S. Department of Justice, Bureau of Justice Statistics: http://www.ncjrs.gov/