since the mid 70s in the u.s property crime rates have
Crime in the United States 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. Several theories have been proposed to explain this decline:
Uniform Crime Reports The Uniform Crime Reports (UCR) compiles official data on crime in the United States, published by the Federal Bureau of Investigation (FBI). UCR is "a nationwide, cooperative statistical effort of nearly 18,000 city, university and college, county, state, tribal, and federal law enforcement agencies voluntarily reporting data on crimes brought to their attention".[2]