Created with Raphaël 2.1.2
40.5%
2018
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0%
39.0%
2007
41.2%
2008
45.8%
2009
45.6%
2010
45.3%
2011
44.3%
2012
45.1%
2013
44.6%
2014
43.7%
2015
41.9%
2016
41.0%
2017
40.5%
2018