Prevalence of Other Drug Use

"From 1998 to 2006, there was an increase among those aged 21–30 who reported ever having used one or more of the substances amphetamine, cocaine or heroin, while there was a decline from 2006 to 2010 (Figure 4). The decline reflects the pattern for younger age groups. Use during the last six months also tended to decline towards the end of the 2000s."

Source: 

Norwegian Institute for Alcohol and Drug Research, "The Drug Situation in Norway 2012: annual report to the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA)," (Oslo, Norway: December 2012), p. 19.
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