Clearance Rates for Reported Violent and Property Crimes in the US, 1996-2015: According to the FBI's Uniform Crime Report, in 2015, of the 1,197,704 violent offenses known to police, 46.0 percent were cleared by arrest or exceptional means. Of the 7,993,631 property offenses in 2015 known to police, only 19.4 percent were cleared by arrest or exceptional means. In 2000, of the 1,131,923 violent offenses known to police, 47.5 percent were cleared by arrest or exceptional means. Of the 8,235,013 property offenses in 2000 known to police, only 16.7 percent were cleared by arrest or exceptional means.

"In the UCR Program, a law enforcement agency reports that an offense is cleared by arrest, or solved for crime reporting purposes, when three specific conditions have been met. The three conditions are that at least one person has been:

"• Arrested.
"• Charged with the commission of the offense.
"• Turned over to the court for prosecution (whether following arrest, courtsummons, or police notice).

Total Annual Arrests in the US by Year and Type of Offense
In 2015, law enforcement agencies in the US made 10,797,088 arrests for all offenses, of which 1,488,707 were drug arrests, 505,681 were for violent offenses, and 1,463,213 were for property offenses. A total of 643,121 marijuana arrests were made that year, of which 64,480 were for trafficking or sales, and 574,641 were for simple possession of marijuana.