1972 |
75%
|
1969 |
65%
|
1974 |
65%
|
1968 |
60%
|
1969 |
57%
|
1969 |
61%
|
1974 |
83%
|
1976 |
83%
|
1972 |
60%
|
1969 |
65%
|
1968 |
57%
|
1969 |
61%
|
1970 |
64%
|