2002 |
92%
|
1999 |
92%
|
2001 |
92%
|
1983 |
75%
|
1986 |
75%
|
1981 |
69%
|
1976 |
65%
|
1969 |
79%
|
1983 |
74%
|
2010 |
74%
|
1988 |
75%
|
1968 |
38%
|