1985 |
76%
|
1997 |
72%
|
1984 |
64%
|
1988 |
60%
|
1984 |
75%
|
1972 |
52%
|
1973 |
46%
|
1985 |
77%
|
1984 |
66%
|
1981 |
69%
|
1983 |
56%
|