| 1984 |
67%
|
| 1997 |
71%
|
| 1985 |
58%
|
| 1986 |
54%
|
| 1987 |
50%
|
| 1988 |
46%
|
| 1994 |
35%
|
| 1989 |
44%
|
| 1991 |
75%
|
| 1968 |
79%
|
| 1975 |
59%
|
| 1962 |
85%
|
| 1964 |
72%
|
| 1997 |
49%
|
