| 1984 |
67%
|
| 1981 |
85%
|
| 1985 |
58%
|
| 1986 |
54%
|
| 1987 |
50%
|
| 1983 |
75%
|
| 1988 |
46%
|
| 1994 |
35%
|
| 1989 |
44%
|
| 1994 |
67%
|
| 1998 |
66%
|
| 1980 |
71%
|
| 1984 |
67%
|
| 1994 |
72%
|
| 1995 |
72%
|
| 1997 |
72%
|
| 1996 |
72%
|
| 1995 |
75%
|
| 1997 |
49%
|
| 1983 |
56%
|
| 1990 |
73%
|
| 1997 |
52%
|
| 2000 |
36%
|
