| 1990 |
87%
|
| 1995 |
82%
|
| 2000 |
92%
|
| 1980 |
81%
|
| 1994 |
69%
|
| 1993 |
79%
|
| 1981 |
60%
|
| 1986 |
78%
|
| 1988 |
78%
|
| 1985 |
78%
|
| 1972 |
60%
|
