| 1981 |
31%
|
| 1969 |
51%
|
| 1970 |
52%
|
| 1973 |
52%
|
| 1974 |
54%
|
| 1971 |
48%
|
| 1973 |
53%
|
| 1983 |
34%
|
| 1952 |
54%
|
| 1963 |
60%
|
| 1988 |
54%
|
| 1973 |
48%
|
