| 2000 | 2005 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|---|
| Baden-Württemberg | 78.06 | 68.99 | 61.38 | 60.89 | 32.56 |
| Bayern | 75.00 | 54.22 | 60.08 | 54.01 | 30.05 |
| Hessen | 46.00 | 31.80 | 32.45 | 40.47 | 17.87 |
| Brandenburg | 15.75 | 15.71 | 16.43 | 13.60 | 9.63 |
| Mecklenburg-Vorpommern | 8.16 | 4.87 | 8.70 | 4.71 | 3.20 |
| Bremen | 8.72 | 14.63 | 23.32 | 14.26 | 9.75 |
| Hamburg | 14.52 | 26.42 | 17.94 | 16.31 | 12.12 |
| Niedersachsen | 20.22 | 18.05 | 16.14 | 19.25 | 8.52 |
| Nordrhein-Westfalen | 20.95 | 19.95 | 18.74 | 17.72 | 9.29 |
| Saarland | 10.28 | 17.42 | 11.95 | 14.17 | 5.36 |
| Sachsen-Anhalt | 6.20 | 7.38 | 5.23 | 4.65 | 3.62 |
| Schleswig-Holstein | 11.17 | 10.86 | 11.73 | 15.38 | 7.65 |
| Sachsen | 29.03 | 16.49 | 25.51 | 17.62 | 10.49 |
| Thüringen | 22.33 | 23.98 | 20.85 | 24.52 | 13.30 |
| Rheinland-Pfalz | 18.96 | 26.26 | 21.48 | 23.73 | 9.07 |
| Berlin | 35.45 | 31.69 | 30.72 | 25.14 | 18.37 |