1961 |
91%
|
1960 |
91%
|
1959 |
85%
|
1958 |
85%
|
1968 |
79%
|
1971 |
79%
|
1970 |
79%
|
1959 |
78%
|
1959 |
78%
|
1960 |
76%
|