| 1976 |
67%
|
| 1980 |
65%
|
| 1980 |
65%
|
| 1978 |
65%
|
| 1982 |
56%
|
| 1971 |
79%
|
| 1975 |
70%
|
| 1976 |
52%
|
| 1981 |
48%
|
| 1977 |
53%
|
| 1983 |
51%
|
| 1973 |
54%
|
