Substance	Frequency of substance abuse
	In the last month	In the last year	More than a year	Never
Cannabis	9.6%	4.0%	6.3%	80.1%
Inhalants	2.7%	1.6%	4.1%	91.6%
Ecstasy	2.1%	0.9%	3.0%	94.0%
Anabolic steroids	2.1%	0.2%	0.7%	97.0%
Magic mushrooms	2.1%	0.5%	1.1%	96.3%
Heroin	0.5%	0.0%	0.5%	99.0%
Amphetamines	2.5%	0.7%	0.7%	96.1%
Ketamine	2.1%	0.0%	0.5%	97.4%
LSD	2.3%	0.9%	1.4%	95.4%
Cocaine	4.4%	1.6%	1.8%	92.2%
GHB	1.1%	0.0%	0.0%	98.9%
Tranquillisers	3.4%	1.4%	1.8%	93.4%
Ritalin	1.1%	0.0%	0.0%	98.9%