In the long term, violent crime in the United States has been in decline since colonial times.[6] However, during the early 20th century, crime rates in the United States were higher compared to parts of Western Europe. For example, 198 homicides were recorded in the American city of Chicago in 1916, a city of slightly over 2 million at the time. This level of crime was not exceptional when compared to other American cities such as New York, but was much higher relative to European cities, such as London, which then had three times the population but recorded only 45 homicides in the same year.[7]
After World War II, crime rates increased in the United States, peaking from the 1970s to the early 1990s. Violent crime nearly quadrupled between 1960 and its peak in 1991. Property crime more than doubled over the same period. Since the 1990s, however, crime in the United States has declined steeply.