| 1968 |
80%
|
| 1992 |
66%
|
| 1984 |
63%
|
| 1979 |
65%
|
| 1993 |
75%
|
| 1968 |
81%
|
| 1992 |
70%
|
| 1993 |
70%
|
| 1985 |
66%
|
| 1981 |
67%
|
| 1986 |
61%
|
| 1985 |
61%
|
| 1989 |
48%
|
| 1983 |
54%
|
