| 1978 |
82%
|
| 1981 |
72%
|
| 1985 |
72%
|
| 1981 |
71%
|
| 2006 |
60%
|
| 1980 |
69%
|
| 1996 |
54%
|
| 1983 |
62%
|
| 1982 |
50%
|
| 1987 |
69%
|
| 2005 |
33%
|
| 1988 |
51%
|
| 1993 |
39%
|
| 1989 |
57%
|
