| 1987 |
76%
|
| 1989 |
76%
|
| 1988 |
76%
|
| 1990 |
76%
|
| 1986 |
76%
|
| 1991 |
76%
|
| 1993 |
68%
|
| 1994 |
68%
|
| 1999 |
61%
|
| 1976 |
65%
|
| 1974 |
65%
|
| 1977 |
68%
|
| 1995 |
55%
|
| 1970 |
72%
|
| 1970 |
66%
|
| 1969 |
66%
|
| 1975 |
65%
|
