| 1977 |
76%
|
| 1982 |
69%
|
| 1985 |
70%
|
| 1984 |
75%
|
| 1984 |
69%
|
| 1993 |
79%
|
| 1979 |
70%
|
| 1978 |
70%
|
| 1985 |
67%
|
| 1991 |
46%
|
| 1983 |
71%
|
| 1988 |
57%
|
| 1991 |
52%
|
| 1989 |
55%
|
| 1993 |
54%
|
