What FBI index crime occurs most each year?

The "UCR" is Uniform Crime Reports which is a source of crime information compiled by the FBI each year. The crimes that are tracked using the "UCR" are Part I criminal homicide, forcible rape, robbery, aggravated assault, burglary, larceny-theft, motor vehicle theft, arson,; Part II simple assaults, forgery and counterfeiting, fraud, embezzlement, buying/ receiving or possessing stolen property, vandalism, prostitution and commercialized vice, sex offenses, drug abuse violations, offense against family and children, driving under the influence, liquor law violations, drunkenness, disorderly conduct, vagrancy, curfew violations and loitering, and running away; also includes all of the Group A and Group B of the National Incidence Based Reporting System crimes and some of those are kidnapping/abduction, gambling offenses, extortion/blackmail, bribery, bad checks, peeping tom, and trespass of real property.

Index crimes are the eight crimes the FBI combines to produce its annual crime index. These offenses include willful homicide, forcible rape, robbery, burglary, aggravated assault, larceny over $50, motor vehicle theft, and arson.