| 2000 | 2005 | 2010 | 2011 | |
|---|---|---|---|---|
| Nordrhein-Westfalen | 81.471 | 88.822 | 87.742 | 81.977 |
| Bayern | 44.466 | 54.304 | 59.505 | 59.526 |
| Baden-Württemberg | 43.252 | 49.530 | 50.150 | 49.227 |
| Niedersachsen | 35.939 | 43.181 | 41.347 | 41.338 |
| Hessen | 24.070 | 25.468 | 27.973 | 27.018 |
| Rheinland-Pfalz | 16.036 | 17.736 | 18.246 | 18.042 |
| Schleswig-Holstein | 8.706 | 10.227 | 11.030 | 10.815 |
| Berlin | 12.828 | 13.306 | 8.884 | 8.603 |
| Sachsen-Anhalt | 18.878 | 16.990 | 6.315 | 6.120 |
| Thüringen | 14.668 | 12.947 | 5.979 | 5.821 |
| Brandenburg | 16.502 | 15.334 | 6.110 | 5.555 |
| Mecklenburg-Vorpommern | 12.819 | 10.896 | 3.870 | 3.678 |
| Saarland | 3.655 | 3.679 | 3.392 | 3.365 |
| Hamburg | 4.579 | 4.541 | 3.864 | 3.177 |
| Bremen | 3.011 | 3.174 | 2.748 | 2.714 |