| 1976 |
79%
|
| 1991 |
79%
|
| 1993 |
75%
|
| 1971 |
65%
|
| 1975 |
79%
|
| 1978 |
75%
|
| 1975 |
74%
|
| 1985 |
74%
|
| 1986 |
74%
|
| 1988 |
57%
|
| 1985 |
67%
|
| 1987 |
46%
|
| 1977 |
77%
|
| 1993 |
54%
|
| 1977 |
74%
|
