| 1979 |
53%
|
| 1980 |
58%
|
| 1976 |
54%
|
| 1974 |
52%
|
| 1983 |
46%
|
| 1983 |
34%
|
| 1982 |
38%
|
| 1982 |
34%
|
| 1976 |
41%
|
| 1969 |
47%
|
