Ranges for the number of injecting drug users in Norway 2002-2010, calculated using the Mortality Multiplier*
Lower limit - Upper limit
* Figures are rounded.
"The figures include all injecting use. Heroin is still the most common drug injected, but, for more and more people, amphetamine is becoming the main drug injected. The proportion of injecting drug users in Oslo who had primarily injected amphetamine during the past month was approximately 20 per cent in 2002–2004. In 2008–2010, the corresponding figure was approximately 35 per cent (unpublished results from a study conducted among injecting drug users in Oslo, Bretteville-Jensen, SIRUS). It has also become more common to inject both heroin and amphetamine."
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), Table 1, p. 27.