Table Markets-16. Average potency of herbal cannabis at retail level, measured as percentage THC content from 1998 to 2002
| Country | 1998 | 1999 | 2000 | 2001 | 2002 | |
| Belgium | (a) | na | na | 10.4 | 6 | 6 |
| Czech Republic | (b) | na | na | 11 | 11 | 12 |
| Czech Republic | (c) | na | na | na | 1.6 | 2.7 |
| Germany | (a) | na | 6 | 6.4 | 8.6 | 8.4 |
| France | (a) | na | na | <2 | <2 | 8 |
| Italy | (a) | 8.3 | 16.9 | 6.3 | 5.8 | 5.5 |
| Latvia | (a) | na | na | na | na | 1.5 |
| Luxembourg | (a) | na | na | na | na | 8 |
| Hungary | (c) | na | na | na | na | 1.1 |
| Netherlands | (a) (1) | na | 7.5 | 10.1 | 14.6 | na |
| Netherlands | (b) (1) | na | 8.6 | 11.3 | 15.2 | na |
| Netherlands | (c) (1) | na | 5 | 5.1 | 6.6 | na |
| Portugal | (a) | 1.6 | na | na | 5.2 | 3.1 |
| Portugal | (b) | na | na | na | 14.6 | 13.1 |
| Finland | (a) | na | na | na | na | 2 |
| UK (England and Wales) | 7.9 | 9.5 | 12 | 9.5 | 10.7 | |
| Norway | na | na | na | na | 8 | |
| Notes: | ||||||
| na: data not available | ||||||
| Data are not available for un-listed countries. | ||||||
| This table is based on EMCDDA Standard Table 14, which requires herbal cannabis to be reported as (a) 'cannabis leaves', (b) 'nederwiet' and (c) 'other grass'. | ||||||
| (1) The Netherlands: 1999, 2000 and 2001 data refer respectively to 1999/2000, 2000/2001 and 2001/2002. | ||||||
| Sources: Reitox national focal points | ||||||
