According to the FBI's National Incident-Based Reporting System (NIBRS), in 2014, 6,520 law enforcement agencies—charged with protecting more than 93 million U.S. inhabitants—reported 4,759,438 incidents involving 5,489,485 offenses, 5,790,423 victims, and 4,414,016 known offenders.
A Justice Department audit has found that the FBI has devoted "considerable resources" to fixing problems with its handling of National Security Letters, and has made definite progress.