| 2011 | 2012 | 2013 | 2014 | 2015 | |
|---|---|---|---|---|---|
| Baden-Württemberg | 1 772 | 1 765 | 1 701 | 1 842 | 1 688 |
| Bayern | 4 939 | 5 024 | 5 137 | 5 321 | 4 827 |
| Berlin | 1 | 1 | 1 | 2 | 2 |
| Brandenburg | 1 076 | 1 047 | 1 008 | 1 088 | 1 000 |
| Bremen | 13 | 12 | 15 | 14 | 12 |
| Hamburg | 7 | 7 | 7 | 8 | 8 |
| Hessen | 708 | 707 | 732 | 773 | 711 |
| Mecklenburg-Vorpommern | 1 002 | 1 022 | 1 052 | 1 082 | 928 |
| Niedersachsen | 6 035 | 6 566 | 7 290 | 7 558 | 7 014 |
| Nordrhein-Westfalen | 3 433 | 3 623 | 4 176 | 4 165 | 3 850 |
| Rheinland-Pfalz | 463 | 452 | 536 | 552 | 493 |
| Saarland | 60 | 61 | 65 | 62 | 54 |
| Sachsen | 981 | 979 | 1 008 | 1 071 | 945 |
| Sachsen-Anhalt | 878 | 917 | 837 | 959 | 884 |
| Schleswig-Holstein | 1 748 | 1 738 | 2 001 | 1 853 | 1 618 |
| Thüringen | 678 | 693 | 670 | 718 | 643 |