1992 |
60%
|
1963 |
91%
|
1975 |
69%
|
1985 |
57%
|
1990 |
66%
|
1964 |
82%
|
1971 |
79%
|
1963 |
85%
|
1972 |
52%
|
1959 |
78%
|
2007 |
78%
|
2015 |
25%
|