| 1996 |
84%
|
| 1995 |
84%
|
| 1992 |
84%
|
| 1994 |
84%
|
| 1981 |
69%
|
| 1977 |
63%
|
| 1988 |
77%
|
| 1991 |
73%
|
| 1990 |
70%
|
| 1991 |
64%
|
| 1999 |
53%
|
| 1988 |
35%
|
