| Country | Decrease (%) | No trend (%) | Increase (%) |
|---|---|---|---|
| BALTIC SEA | |||
| Denmark (7) | 14 | 86 | 0 |
| Estonia (30) | 0 | 97 | 3 |
| Finland (106) | 7.55 | 81.13 | 11.32 |
| Germany (45) | 2 | 98 | 0 |
| Latvia (67) | 0 | 94 | 6 |
| Lithuania (14) | 14 | 86 | 0 |
| Poland (24) | 4 | 83 | 13 |
| Sweden (87) | 2.3 | 94.3 | 3.4 |
| GREATER NORTH SEA | |||
| Belgium (6) | 17 | 83 | 0 |
| Germany (6) | 0 | 100 | 0 |
| France (28) | 7 | 93 | 0 |
| Netherlands (38) | 34 | 61 | 5 |
| Sweden (9) | 11 | 89 | 0 |
| United Kingdom (1) | 0 | 100 | 0 |
| CELTIC SEAS | |||
| United Kingdom (9) | 11 | 89 | 0 |
| Ireland (23) | 4.35 | 91.3 | 4.35 |
| BAY OF BISCAY | |||
| France (30) | 13 | 87 | 0 |
| Spain (7) | 0 | 100 | 0 |
| ADRIATIC SEA | |||
| Croatia (19) | 16 | 84 | 0 |
| Slovenia (4) | 0 | 100 | 0 |
| WESTERN MEDITERRANEAN | |||
| France (36) | 3 | 97 | 0 |