| Année | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Respect de l'objectif | non | non | non | non | non | non | non | non | non | non | non | non | non | non | non | non | non | non | non |
| Pourcentage de dépassements | 100% | 100% | 100% | 100% | 100% | 92% | 92% | 67% | 67% | 67% | 83% | 67% | 83% | 58% | 58% | 75% | 75% | 92% | 50% |
| Nb de dépassements / Nb de mesures | 12/12 | 12/12 | 12/12 | 12/12 | 12/12 | 11/12 | 11/12 | 8/12 | 8/12 | 8/12 | 10/12 | 8/12 | 10/12 | 7/12 | 7/12 | 9/12 | 9/12 | 11/12 | 6/12 |