Data taken from national surveys available in each country. Figures and methodology for each survey can be consulted in Table GPS-4 in the 2005 statistical bulletin.
For young adults, the EMCDDA uses the range 15–34 years (Denmark and UK from 16, Germany, Estonia (1998) and Hungary from 18). In France the age range was 25–34 in 1992 and 18–39 in 1995.
(1) Sample sizes (respondents) for the 15–34 age group for each country and year are presented in Table GPS-4 in the 2005 statistical bulletin.