Law enforcement agencies report the number of offenses and associated crime data for the following Part 1 crimes: murder and non-negligent manslaughter, forcible rape, robbery, aggravated assault, burglary, larceny, motor vehicle theft and arson. Part 1 offenses, excluding negligent manslaughter and arson, are used to calculate the Crime Index and Crime Rate. All other offenses are classified as Part 2 offenses, however, only arrest data are reported for Part 2 offenses. The UCR Program collects data on the age, race and sex of persons arrested for all crimes except traffic violations. Statistics are broken down by county and the report is accessible in several sections using Adobe Acrobat.