Created with Raphaël 2.1.2
30.8
2017
5.0
10.0
15.0
20.0
25.0
30.0
7.1
1991
4.6
1993
4.6
1995
11.9
1997
20.7
2001
22.8
2003
27.6
2005
28.1
2007
30.6
2009
31.9
2011
29.5
2013
28.5
2015
30.8
2017