| 1983 |
75%
|
| 1979 |
70%
|
| 1976 |
79%
|
| 1978 |
70%
|
| 1971 |
79%
|
| 1969 |
79%
|
| 1973 |
59%
|
| 1985 |
77%
|
| 1979 |
78%
|
| 1975 |
56%
|
| 1973 |
65%
|
| 1989 |
41%
|
