| 2011 | 2012 | 2013 | 2014 | 2015 | |
|---|---|---|---|---|---|
| Mecklenburg-Vorpommern | 315 | 331 | 370 | 492 | 489 |
| Niedersachsen | 502 | 513 | 540 | 728 | 757 |
| Nordrhein-Westfalen | 366 | 374 | 397 | 541 | 566 |
| Rheinland-Pfalz | 286 | 295 | 317 | 348 | 349 |
| Saarland | 7 | 7 | 7 | 10 | 10 |
| Sachsen | 345 | 345 | 359 | 510 | 388 |
| Sachsen-Anhalt | 313 | 346 | 327 | 421 | 425 |
| Schleswig-Holstein | 179 | 183 | 191 | 252 | 258 |
| Thüringen | 283 | 285 | 303 | 428 | 323 |
| Hessen | 134 | 130 | 138 | 160 | 163 |
| Hamburg | 15 | 15 | 15 | 20 | 21 |
| Bremen | 2 | 2 | 2 | 4 | 4 |
| Brandenburg | 340 | 350 | 368 | 537 | 414 |
| Berlin | 2 | 2 | 2 | 3 | 4 |
| Bayern | 358 | 363 | 385 | 461 | 485 |
| Baden-Württemberg | 348 | 361 | 386 | 412 | 423 |