La matematica non è un opinione, e le statistiche del European Monitoring Centre for Drugs and Drug Addiction (http://www.emcdda.europa.eu/) parlano chiaro:

Table GPS-9. Lifetime prevalence (percentage) of drug use among young adults (aged 15 to 34) in nationwide surveys among the general population: last survey available for each Member State

Country
geographical area

Year
Ref.
Age range young adults
Sample size young adults
Cannabis (%)
Cocaine (%) (1)
Amphetamines (%) (2)
Ecstasy (%)
(3)
LSD (%)

Czech Republic
National

2004
(2)
18-34
1414
38.3
1.8
4.7
14.6
2.5

Denmark
National

2000
(3)
16-34
4141
44.6
4.5
9.6
2.6
1.3


Spain
National

2003
(5)
15-34
5357
39.0
8.9
4.7
8.3


France
France

2002
(5)
15-34
724
39.9
3.0
0.1
1.9
1.5

Italy
National

2003
(2)
15-34
5231
29.9
6.2
2.0
3.3
3.0

Netherlands
National

2001
(2)
15-34
6687
31.5
5.1
5.1
7.4
1.6

United Kingdom
National

2004
(11)
16-34

42.3
11.1
17.9
13.4
9.0


http://stats06.emcdda.europa.eu/en/e...stab10-en.html

http://stats06.emcdda.europa.eu/en/e...stab12-en.html

http://stats06.emcdda.europa.eu/en/e...stab14-en.html

Si notino i dati olandesi....... e tutto diventa più che chiaro...........