| Country | Decrease (%) | No trend (%) | Increase (%) |
|---|---|---|---|
| BALTIC SEA | |||
| Denmark (4) | 25 | 75 | 0 |
| Estonia (24) | 0 | 92 | 8 |
| Finland (21) | 0 | 95 | 5 |
| Germany (29) | 3 | 97 | 0 |
| Latvia (10) | 0 | 100 | 0 |
| Lithuania (7) | 0 | 100 | 0 |
| Poland (11) | 0 | 100 | 0 |
| Sweden (65) | 15 | 83 | 2 |
| GREATER NORTH SEA | |||
| Belgium (15) | 13 | 80 | 7 |
| France (4) | 0 | 100 | 0 |
| Germany (28) | 25 | 75 | 0 |
| Netherlands (41) | 34 | 66 | 0 |
| Sweden (7) | 0 | 100 | 0 |
| United Kingdom (3) | 0 | 100 | 0 |
| CELTIC SEAS | |||
| Ireland (13) | 0 | 100 | 0 |
| ADRIATIC SEA | |||
| Croatia (17) | 0 | 88 | 12 |
| Slovenia (4) | 25 | 75 | 0 |