| 1997 |
77%
|
| 1989 |
68%
|
| 1988 |
65%
|
| 1968 |
79%
|
| 1969 |
79%
|
| 1970 |
79%
|
| 1975 |
70%
|
| 1982 |
71%
|
| 1973 |
49%
|
| 1973 |
65%
|
