| 1998 |
77%
|
| 1981 |
60%
|
| 1995 |
70%
|
| 1999 |
59%
|
| 1991 |
83%
|
| 1992 |
83%
|
| 1994 |
54%
|
| 1994 |
68%
|
| 1995 |
55%
|
| 1998 |
66%
|
| 1979 |
62%
|
| 2006 |
63%
|
| 2000 |
57%
|
