1967 |
74%
|
1978 |
75%
|
1980 |
75%
|
1975 |
75%
|
1976 |
75%
|
1981 |
75%
|
1965 |
72%
|
1963 |
72%
|
1967 |
72%
|
1964 |
72%
|
1968 |
69%
|
1973 |
69%
|
1972 |
69%
|
1971 |
69%
|
1970 |
69%
|
1969 |
69%
|