| 2000 | 2005 | 2010 | 2011 | |
|---|---|---|---|---|
| Bayern | 55 372 | 43 254 | 37 962 | 45 847 |
| Nordrhein-Westfalen | 61 928 | 44 610 | 32 393 | 34 794 |
| Baden-Württemberg | 39 353 | 33 122 | 25 778 | 30 471 |
| Niedersachsen | 35 112 | 20 742 | 15 003 | 21 177 |
| Hessen | 19 980 | 14 579 | 10 279 | 13 249 |
| Rheinland-Pfalz | 16 585 | 11 647 | 7 942 | 10 180 |
| Schleswig-Holstein | 11 641 | 8 472 | 7 471 | 8 620 |
| Brandenburg | 14 369 | 8 219 | 5 940 | 6 911 |
| Berlin | 6 635 | 2 648 | 3 776 | 5 527 |
| Mecklenburg-Vorpommern | 9 378 | 6 240 | 4 182 | 5 039 |
| Hamburg | 3 989 | 3 254 | 3 679 | 4 747 |
| Thüringen | 6 129 | 3 177 | 2 168 | 2 769 |
| Sachsen-Anhalt | 7 398 | 3 542 | 2 023 | 2 586 |
| Saarland | 2 674 | 1 822 | 1 035 | 1 709 |
| Bremen | 1 552 | 1 209 | 991 | 1 241 |