Created with Raphaël 2.1.2
80,2%
1971
10,0
20,0
30,0
40,0
50,0
60,0
70,0
80,0%
79,1%
1971
83,5%
1972
88,0%
1977
87,0%
1981
81,0%
1982
85,8%
1986
80,3%
1989
78,7%
1994
73,3%
1998
78,9%
2002
79,9%
2003
80,4%
2006
75,3%
2010
74,6%
2012
80,2%
2017