Line chart with four lines: the number of drug law violation arrests for heroin/cocaine, marijuana, synthetic drugs, and other, 1982-2007.

For heroin/cocaine violations arrests, the number of arrests began at 112,900 in 1982 then it increased to a high of 732,600 in 1989. After 1989, the number decreased to 558,500 in 1991 before it increased to 565,200 in 1994. In 1995, the number climbed to 627,300 before it dropped to 599,500 in 1996. After 1996, the number of arrests fluctuated before it decreased to 541,300 in 2007.

For marijuana violations arrests, the number of arrests began at 455,600 in 1982 then it decreased to 287,900 in 1991. After 1991, the number increased to 734,500 in 2000 before dropping to 697,100 in 2002. In 2003, the number increased to 755,200 and continued to rise reaching a high of 872,700 in 2007.

For synthetic drug violations arrests, the number of arrests began at 24,800 in 1982 then it decreased to 19,500 in 1985. After 1985, the number increased to 31,200 in 1988 and fluctuated until 1997 when it increased to 41,200. In 1998, the number increased to 45,200 and continued to climb to a high of 92,600 in 2006. The number decreased to 88,400 in 2007.

For other drug violations arrests, the number of arrests began at 82,900 in 1982 then it decreased to 82,700 in 1983. After 1983, the number increased to 88,300 and continued to climb, reaching 200,200 in 1989. Then the number decreased to 148,200 in 1990 before it climbed to 411,700 in 2005, and dropped to 338,800 in 2007.

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