Stadtgebiet | Gesamtfläche des Stadtgebietes | Erholungsflächen
| Jahr | Wert | % | Diff | Diff % |
|---|---|---|---|---|
| 2008 | 4,823 ha | 16.00 | ||
| 2011 | 4,846 ha | 16.00 | 23 | 0.48% |
| 2012 | 4,844 ha | 16.00 | -2 | -0.04% |
| 2013 | 4,832 ha | 16.00 | -12 | -0.25% |
| 2014 | 4,862 ha | 16.00 | 30 | 0.62% |
| 2015 | 4,866 ha | 16.00 | 4 | 0.08% |
| 2016 | 4,818 ha | 16.00 | -48 | -0.99% |
| 2017 | 4,909 ha | 16.00 | 91 | 1.89% |
| 2018 | 4,900 ha | 16.00 | -9 | -0.18% |
| 2019 | 4,860 ha | 16.00 | -40 | -0.82% |
| 2020 | 4,872 ha | 16.00 | 12 | 0.25% |