Jahr;Jan;Feb;Mrz;Apr;Mai;Jun;Jul;Aug;Sep;Okt;Nov;Dez
1999;31.7;37.1;40.4;43.0;47.0;47.8;47.5;47.5;40.7;39.4;39.0;29.6
2000;;36.0;40.2;;;46.4;;;43.5;;35.6;31.8
2001;28.5;;37.8;43.0;;47.5;;;;42.0;;
2002;;;40.2;;47.3;48.0;47.0;;44.6;41.0;35.7;31.4
2003;32.7;;40.4;;44.5;;;;;;;32.2
2004;31.5;33.3;39.4;43.6;;46.4;46.5;43.5;42.9;39.4;35.1;31.1
2005;30.3;33.5;40.6;43.5;44.9;46.5;45.8;43.1;43.0;37.6;35.5;31.5
2006;32.1;35.0;37.0;41.9;45.2;45.3;;44.4;41.5;41.6;36.5;31.9
2007;31.9;36.7;38.4;42.4;45.0;45.0;45.2;43.4;43.7;37.6;33.8;32.9
2008;30.9;33.2;38.7;42.6;45.8;;;44.1;42.0;;32.9;30.7
2009;;39.3;39.0;42.3;49.0;;;46.0;;41.7;35.8;32.1
2010;29.9;36.4;40.9;42.7;;46.3;44.3;43.2;41.4;41.5;35.4;29.5
2011;29.4;32.6;;;;;;;;;34.9;29.0
2012;;33.5;40.5;41.9;46.2;46.0;46.5;46.7;44.3;41.3;35.6;33.2
2013;31.5;33.2;37.7;43.3;44.8;46.1;44.0;42.8;42.7;42.1;36.1;31.9
2014;30.4;33.6;38.6;43.9;47.8;46.7;44.1;42.8;45.4;40.3;36.9;30.3
2015;;37.4;40.1;43.7;46.4;46.6;47.7;46.5;44.9;42.6;36.5;29.6
2016;35.0;36.5;38.7;43.4;46.4;47.5;45.8;46.0;43.8;40.9;36.2;31.8
2017;32.9;33.9;39.2;43.0;48.5;47.7;46.5;43.5;43.1;41.0;35.9;29.7
2018;32.4;36.5;39.9;43.6;45.0;47.9;47.4;46.6;42.5;41.0;35.9;32.7