| Janv. | Févr. | Mars | Avril | Mai | Juin | Juil. | Août | Sept. | Octob. | Novem. | Décem. | Année | ||
| Moy. | ||||||||||||||
| 2009 | 1.3 | 3.5 | 7.7 | 13.9 | 18.7 | 20.4 | 23.3 | 23.3 | 19.1 | 12.7 | 8.9 | 3.3 | 13.0 | |
| 09->09 | 1.3 | 3.5 | 7.7 | 13.9 | 18.7 | 20.4 | 23.3 | 23.3 | 19.1 | 12.7 | 8.9 | 3.3 | 13.0 | |
| Ecarts | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| 2010 | -0.4 | 3.6 | 7.7 | 13.1 | 14.4 | 19.6 | 24.1 | 20.3 | 16.5 | 12.2 | 7.1 | 0.7 | 11.6 | |
| 09->10 | 0.5 | 3.6 | 7.7 | 13.5 | 16.6 | 20.0 | 23.7 | 21.8 | 17.8 | 12.5 | 8.0 | 2.0 | 12.3 | |
| Ecarts | -0.9 | 0.0 | 0.0 | -0.4 | -2.2 | -0.4 | 0.4 | -1.5 | -1.3 | -0.3 | -0.9 | -1.3 | -0.7 | |
| 2011 | 3.5 | 5.0 | 9.2 | 15.3 | 18.6 | 19.6 | 19.2 | 22.4 | 18.9 | 13.4 | 7.8 | 4.3 | 13.1 | |
| 09->11 | 1.5 | 4.0 | 8.2 | 14.1 | 17.2 | 19.9 | 22.2 | 22.0 | 18.2 | 12.8 | 7.9 | 2.8 | 12.6 | |
| Ecarts | 2.0 | 1.0 | 1.0 | 1.2 | 1.4 | -0.3 | -3.0 | 0.4 | 0.7 | 0.6 | -0.1 | 1.5 | 0.5 | |
| 2012 | 3.5 | -0.3 | 10.6 | 12.1 | 17.0 | 20.9 | 21.8 | 23.0 | 17.3 | 13.3 | 7.7 | 3.3 | 12.5 | |
| 09->12 | 2.0 | 3.0 | 8.8 | 13.6 | 17.2 | 20.1 | 22.1 | 22.3 | 18.0 | 12.9 | 7.9 | 2.9 | 12.6 | |
| Ecarts | 1.5 | -3.3 | 1.8 | -1.5 | -0.2 | 0.8 | -0.3 | 0.7 | -0.7 | 0.4 | -0.2 | 0.4 | -0.1 | |
| 2013 | 2.0 | 1.6 | 7.3 | 11.9 | 13.1 | 19.0 | 23.4 | 21.8 | 17.9 | 14.7 | 5.8 | 3.7 | 11.9 | |
| 09->13 | 2.0 | 2.7 | 8.5 | 13.3 | 16.4 | 19.9 | 22.4 | 22.2 | 17.9 | 13.3 | 7.5 | 3.1 | 12.4 | |
| Ecarts | 0.0 | -1.1 | -1.2 | -1.4 | -3.3 | -0.9 | 1.0 | -0.4 | 0.0 | 1.4 | -1.7 | 0.6 | -0.5 | |
| 2014 | 4.9 | 6.5 | 9.7 | 13.7 | 15.2 | 21.0 | 20.0 | 20.0 | 18.6 | 15.5 | 9.4 | 4.4 | 13.2 | |
| 09->14 | 2.5 | 3.3 | 8.7 | 13.3 | 16.2 | 20.1 | 22.0 | 21.8 | 18.1 | 13.6 | 7.8 | 3.3 | 12.5 | |
| Ecarts | 2.4 | 3.2 | 1.0 | 0.4 | -1.0 | 0.9 | -2.0 | -1.8 | 0.5 | 1.9 | 1.6 | 1.1 | 0.7 | |
| 2015 | 3.7 | 3.0 | 9.0 | 13.4 | 16.6 | 21.5 | 25.3 | 22.4 | 16.7 | 11.7 | 8.0 | 4.6 | 13.0 | |
| 09->15 | 2.6 | 3.3 | 8.7 | 13.3 | 16.2 | 20.3 | 22.4 | 21.9 | 17.9 | 13.4 | 7.8 | 3.5 | 12.6 | |
| Ecarts | 1.1 | -0.3 | 0.3 | 0.1 | 0.4 | 1.2 | 2.9 | 0.5 | -1.2 | -1.7 | 0.2 | 1.1 | 0.4 | |
| 2016 | 5.2 | 6.8 | 7.7 | 12.0 | 15.3 | 20.0 | 22.7 | 22.3 | 20.0 | 11.6 | 7.6 | 1.4 | 12.7 | |
| 09->16 | 3.0 | 3.7 | 8.6 | 13.2 | 16.1 | 20.3 | 22.5 | 21.9 | 18.1 | 13.1 | 7.8 | 3.2 | 12.6 | |
| Ecarts | 2.2 | 3.1 | -0.9 | -1.2 | -0.8 | -0.3 | 0.2 | 0.4 | 1.9 | -1.5 | -0.2 | -1.8 | 0.1 | |
| 2017 | -1.2 | 7.5 | 11.1 | 12.1 | 17.0 | 22.8 | 22.8 | 22.5 | 15.6 | 13.4 | 5.8 | 1.8 | 12.6 | |
| 09->17 | 2.5 | 4.1 | 8.9 | 13.1 | 16.2 | 20.5 | 22.5 | 22.0 | 17.8 | 13.2 | 7.6 | 3.1 | 12.6 | |
| Ecarts | -3.7 | 3.4 | 2.2 | -1.0 | 0.8 | 2.3 | 0.3 | 0.5 | -2.2 | 0.2 | -1.8 | -1.3 | 0.0 | |
| 2018 | 6.1 | 2.5 | 7.6 | 15.8 | 17.3 | 21.1 | 23.7 | 23.3 | ||||||
| 09->18 | 2.9 | 4.0 | 8.8 | 13.3 | 16.3 | 20.6 | 22.6 | 22.1 | ||||||
| Ecarts | 3.2 | -1.5 | -1.2 | 2.5 | 1.0 | 0.5 | 1.1 | 1.2 | ||||||
| Moy. | ||||||||||||||
| Janv. | Févr. | Mars | Avril | Mai | Juin | Juil. | Août | Sept. | Octob. | Novem. | Décem. | Année | ||