| 2012 | 2015 | 2018 | |
|---|---|---|---|
| Baden-Württemberg | 16 228 | 15 636 | 15 364 |
| Bayern | 34 772 | 33 857 | 33 300 |
| Berlin | 55 | 44 | 39 |
| Brandenburg | 14 015 | 13 684 | 13 883 |
| Bremen | 124 | 84 | 93 |
| Hamburg | 217 | 163 | 207 |
| Hessen | 8 999 | 8 829 | 8 778 |
| Mecklenburg-Vorpommern | 13 850 | 13 834 | 14 420 |
| Niedersachsen | 28 932 | 28 435 | 26 784 |
| Nordrhein-Westfalen | 17 451 | 16 993 | 16 447 |
| Rheinland-Pfalz | 8 391 | 8 250 | 8 199 |
| Saarland | 1 007 | 1 004 | 846 |
| Sachsen | 9 807 | 9 589 | 9 600 |
| Sachsen-Anhalt | 12 752 | 12 575 | 12 426 |
| Schleswig-Holstein | 10 875 | 10 769 | 10 817 |
| Thüringen | 8 663 | 8 394 | 8 434 |