| 1987 |
79%
|
| 1982 |
78%
|
| 1979 |
75%
|
| 1982 |
69%
|
| 1989 |
64%
|
| 1984 |
75%
|
| 1988 |
55%
|
| 1985 |
71%
|
| 1986 |
51%
|
| 1993 |
56%
|
| 1975 |
57%
|
| 1975 |
37%
|
| 1977 |
58%
|
| 1975 |
65%
|
| 1986 |
61%
|
