Stadtgebiet | Gesamtfläche des Stadtgebietes | Gebäude und Freifächen
| Jahr | Wert | % | Diff | Diff % |
|---|---|---|---|---|
| 2008 | 13,704 ha | 44.00 | ||
| 2010 | 13,710 ha | 44.00 | 6 | 0.04% |
| 2011 | 13,744 ha | 44.00 | 34 | 0.25% |
| 2013 | 13,778 ha | 44.00 | 34 | 0.25% |
| 2014 | 13,772 ha | 44.00 | -6 | -0.04% |
| 2015 | 13,784 ha | 44.00 | 12 | 0.09% |
| 2016 | 13,656 ha | 44.00 | -128 | -0.93% |
| 2017 | 13,733 ha | 44.00 | 77 | 0.56% |
| 2018 | 13,750 ha | 44.00 | 17 | 0.12% |
| 2019 | 13,828 ha | 44.00 | 78 | 0.57% |
| 2020 | 13,848 ha | 45.00 | 20 | 0.14% |