Zobrazení grafu: týden | měsíc | půl roku | rok | 5 let | 15 let
| Rok | Maximální | Minimální | Průměr |
|---|---|---|---|
| 2005 | 46.305 | 41.236 | 44.130 |
| 2006 | 47.311 | 41.423 | 44.060 |
| 2007 | 46.617 | 41.589 | 44.049 |
| 2008 | 44.167 | 32.144 | 38.488 |
| 2009 | 48.789 | 35.729 | 39.906 |
| 2010 | 46.664 | 39.246 | 42.360 |
| 2011 | 45.833 | 37.940 | 40.838 |
| 2012 | 50.234 | 42.962 | 46.374 |
| 2013 | 49.398 | 43.102 | 46.144 |
| 2014 | 50.903 | 43.978 | 46.733 |
| 2015 | 58.227 | 50.225 | 54.021 |
| 2016 | 53.636 | 49.654 | 51.469 |
| 2017 | 52.201 | 41.932 | 46.483 |
| 2018 | 42.709 | 38.899 | 40.855 |