1971 |
63%
|
1967 |
75%
|
1976 |
65%
|
1975 |
64%
|
1968 |
79%
|
1969 |
79%
|
1966 |
81%
|
1974 |
84%
|
1966 |
72%
|
1967 |
72%
|
1973 |
69%
|
1971 |
69%
|
1970 |
69%
|
1969 |
69%
|
1974 |
63%
|