Table 2
Substances detected with drug testing
Year
Cannabinoids
Stimulants
Mixed
Total
2005
6
12
1
19
2006
0
8
1
9
2007
4
10
0
14
2008
3
8
1
12
2009
1
13
0
14
2010
1
5
0
6
2011
0
6
0
6