| 1990 | 2000 | 2005 | |
|---|---|---|---|
| Baden-Württemberg | 291 | 397 | 346 |
| Bayern | 310 | 436 | 386 |
| Brandenburg | 184 | 265 | 378 |
| Hessen | 324 | 420 | 373 |
| Mecklenburg-Vorpommern | 216 | 390 | 363 |
| Niedersachsen | 364 | 465 | 446 |
| Nordrhein-Westfalen | 394 | 482 | 471 |
| Rheinland-Pfalz | 317 | 380 | 328 |
| Saarland | 363 | 385 | 230 |
| Sachsen | 222 | 359 | 423 |
| Sachsen-Anhalt | 200 | 396 | 423 |
| Schleswig-Holstein | 324 | 372 | 371 |
| Thüringen | 196 | 364 | 411 |