| 1986 |
75%
|
| 1989 |
69%
|
| 1984 |
64%
|
| 1976 |
65%
|
| 1987 |
62%
|
| 1977 |
58%
|
| 1985 |
74%
|
| 1981 |
64%
|
| 1985 |
66%
|
| 1975 |
37%
|
