| 1998 |
86%
|
| 1999 |
67%
|
| 1989 |
69%
|
| 1994 |
72%
|
| 1992 |
72%
|
| 1993 |
72%
|
| 1981 |
75%
|
| 1995 |
68%
|
| 1997 |
75%
|
| 1984 |
47%
|
