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[D] 

Note: The violent crimes included are rape, robbery, aggravated and 

simple assault, and homicide. The National Crime Victimization Survey redesign was implemented in 1993; the area with the lighter shading is before the redesign and the darker area after the redesign. The data before 1993 are adjusted to make them comparable with data collected since the redesign. The adjustment methods are described in Criminal Victimization 1973-95. Estimates for 1993 and beyond are based on collection year while earlier estimates are based on data year. For additional information about the methods used, see Criminal Victimization 1999. 

Sources: Rape, robbery, and assault data are from the National Crime Victimization Survey (NCVS). Ongoing since 1972, this survey of households interviews about 80,000 persons age 12 and older in 43,000 households twice each year about their victimizations from crime. The homicide data are collected by the FBI's Uniform Crime Reports (UCR) from reports from law enforcement agencies.