Since the passage of the Comprehensive Drug Reform Act of 1986, which ushered in a regime of harsh mandatory minimum sentences, the proportion of the prison population incarcerated for nonviolent drug offenses has risen from 11 percent to 32 percent—an almost three-fold increase. New Jersey has the highest proportion of nonviolent drug offenders as a proportion of its overall prison population in the nation (36 percent). This percentage is far above the national average of 20 percent.