| 1976 |
85%
|
| 1968 |
81%
|
| 1985 |
66%
|
| 1983 |
66%
|
| 1982 |
66%
|
| 1981 |
66%
|
| 1984 |
66%
|
| 1980 |
66%
|
| 1979 |
66%
|
| 1975 |
58%
|
