| 1980 |
68%
|
| 1996 |
74%
|
| 1979 |
62%
|
| 2006 |
76%
|
| 1991 |
73%
|
| 1989 |
73%
|
| 1985 |
60%
|
| 1994 |
75%
|
| 1993 |
75%
|
| 1987 |
68%
|
| 1988 |
35%
|
