| 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 |