| 1999 |
86%
|
| 1990 |
79%
|
| 1996 |
62%
|
| 1991 |
46%
|
| 1992 |
63%
|
| 1982 |
71%
|
| 1987 |
78%
|
| 1993 |
46%
|
| 1994 |
28%
|
| 1997 |
49%
|
| 1981 |
61%
|
