"There were 80% more arrests for drug possession or use in 2010 (1,336,530) than in 1990 (741,600). Between 1990 and its peak in 2006, the arrest rate for drug possession or use increased 75% (figure 37). The arrest rate declined between 2006 and 2010, ending in 2010 at 46% above its 1990 level and at a level similar to those seen between 1997 and 2002."
Source
Snyder, Howard N. "Arrests in the United States, 1990-2010." Washington, DC: US Dept. of Justice Bureau of Justice Statistics. Oct. 2012. NCJ239423.
