| Country | Decrease (%) | No trend (%) | Increase (%) |
|---|---|---|---|
| BALTIC SEA | |||
| Denmark (4) | 0 | 75 | 25 |
| Estonia (24) | 0 | 92 | 8 |
| Finland (21) | 0 | 95 | 5 |
| Germany (29) | 10 | 90 | 0 |
| Latvia (10) | 0 | 100 | 0 |
| Lithuania (7) | 29 | 57 | 14 |
| Poland (11) | 0 | 100 | 0 |
| Sweden (65) | 2 | 83 | 15 |
| GREATER NORTH SEA | |||
| Belgium (15) | 33 | 67 | 0 |
| France (22) | 0 | 100 | 0 |
| Germany (28) | 14 | 82 | 4 |
| Netherlands (41) | 61 | 39 | 0 |
| Sweden (7) | 0 | 100 | 0 |
| United Kingdom (3) | 0 | 100 | 0 |
| CELTIC SEAS | |||
| Ireland (13) | 0 | 100 | 0 |
| BAY OF BISCAY | |||
| France (24) | 13 | 88 | 0 |
| Spain (1) | 0 | 100 | 0 |
| ADRIATIC SEA | |||
| Croatia (17) | 6 | 94 | 0 |
| Slovenia (4) | 0 | 100 | 0 |
| WESTERN MEDITERRANEAN SEA | |||
| France (1) | 0 | 100 | 0 |