| 1982 |
67%
|
| 1981 |
72%
|
| 1986 |
70%
|
| 1977 |
84%
|
| 1983 |
71%
|
| 1979 |
65%
|
| 1973 |
79%
|
| 1975 |
79%
|
| 1972 |
60%
|
| 1970 |
65%
|
| 1972 |
55%
|
