Stadtgebiet | Gesamtfläche des Stadtgebietes | Waldflächen
| Jahr | Wert | % | Diff | Diff % |
|---|---|---|---|---|
| 2008 | 1,265 ha | 4.00 | ||
| 2010 | 1,277 ha | 4.00 | 12 | 0.95% |
| 2011 | 1,285 ha | 4.00 | 8 | 0.63% |
| 2012 | 1,289 ha | 4.00 | 4 | 0.31% |
| 2013 | 1,290 ha | 4.00 | 1 | 0.08% |
| 2015 | 1,291 ha | 4.00 | 1 | 0.08% |
| 2016 | 1,356 ha | 4.00 | 65 | 5.03% |
| 2017 | 1,358 ha | 4.00 | 2 | 0.15% |
| 2018 | 1,360 ha | 4.00 | 2 | 0.15% |
| 2019 | 1,364 ha | 4.00 | 4 | 0.29% |
| 2020 | 1,367 ha | 4.00 | 3 | 0.22% |