2010 |
77%
|
2007 |
52%
|
1999 |
74%
|
1989 |
79%
|
2006 |
56%
|
1996 |
72%
|
1987 |
76%
|
1990 |
76%
|
1987 |
76%
|
1983 |
80%
|
1984 |
80%
|
1985 |
80%
|
1994 |
68%
|
1993 |
79%
|
2011 |
71%
|
1989 |
48%
|
1993 |
39%
|