| 1999 |
57%
|
| 1982 |
70%
|
| 1982 |
56%
|
| 1974 |
45%
|
| 1988 |
53%
|
| 1973 |
47%
|
| 1970 |
52%
|
| 1973 |
48%
|
| 1978 |
56%
|
| 1977 |
44%
|
| 1972 |
55%
|
| 1978 |
44%
|
