Zobrazení grafu: týden | měsíc | půl roku | rok | 5 let | 15 let
| Rok | Maximální | Minimální | Průměr |
|---|---|---|---|
| 2008 | 10.411 | 7.342 | 9.378 |
| 2009 | 10.593 | 8.275 | 9.571 |
| 2010 | 11.860 | 9.973 | 10.854 |
| 2011 | 11.371 | 9.678 | 10.583 |
| 2012 | 11.329 | 9.126 | 10.060 |
| 2013 | 10.103 | 7.938 | 9.112 |
| 2014 | 9.520 | 8.072 | 8.829 |
| 2015 | 9.584 | 5.741 | 7.508 |
| 2016 | 7.983 | 5.986 | 7.040 |
| 2017 | 8.339 | 6.428 | 7.338 |
| 2018 | 6.620 | 5.204 | 5.976 |
| 2019 | 6.158 | 5.790 | 6.039 |