| 1976 |
79%
|
| 2006 |
66%
|
| 1979 |
70%
|
| 1985 |
67%
|
| 1982 |
67%
|
| 1990 |
59%
|
| 1982 |
71%
|
| 1998 |
67%
|
| 1986 |
75%
|
| 1980 |
62%
|
| 1996 |
55%
|
| 1993 |
75%
|
| 1981 |
42%
|
