| 1999 |
71%
|
| 2001 |
64%
|
| 2007 |
68%
|
| 1976 |
65%
|
| 1987 |
47%
|
| 1977 |
70%
|
| 1984 |
71%
|
| 1985 |
78%
|
| 1986 |
78%
|
