| 1992 |
54%
|
| 1986 |
54%
|
| 1985 |
56%
|
| 1972 |
64%
|
| 1991 |
57%
|
| 1960 |
67%
|
| 1972 |
65%
|
| 1971 |
65%
|
| 1965 |
66%
|
| 1973 |
65%
|
| 1981 |
59%
|
| 1970 |
55%
|
| 1974 |
56%
|
| 1996 |
42%
|
| 1977 |
57%
|
