| 1993 |
80%
|
| 1975 |
69%
|
| 1969 |
74%
|
| 1979 |
71%
|
| 1981 |
71%
|
| 1988 |
62%
|
| 1981 |
49%
|
| 1978 |
53%
|
| 1979 |
54%
|
| 1987 |
51%
|
