| 1967 |
75%
|
| 1963 |
66%
|
| 1993 |
56%
|
| 1979 |
71%
|
| 1983 |
71%
|
| 1982 |
71%
|
| 1979 |
71%
|
| 1984 |
71%
|
| 1980 |
71%
|
| 1981 |
71%
|
| 1970 |
45%
|
| 1991 |
43%
|
| 1993 |
42%
|
| 1992 |
42%
|
| 1997 |
61%
|
| 2000 |
55%
|
