Parties and Range States
| Title | Status date |
|---|---|
| Belgium | 1993 |
| Denmark | 1993 |
| Estonia | |
| European Union | |
| Finland | 1999 |
| France | 2005 |
| Germany | 1993 |
| Ireland | |
| Latvia | |
| Lithuania | 2005 |
| Netherlands | 1992 |
| Norway | |
| Poland | 1996 |
| Portugal | |
| Russian Federation | |
| Spain | |
| Sweden | 1992 |
| United Kingdom | 1993 |