1976 |
67%
|
1980 |
65%
|
1980 |
65%
|
1978 |
65%
|
1982 |
56%
|
1971 |
79%
|
1975 |
70%
|
1976 |
52%
|
1981 |
48%
|
1977 |
53%
|
1983 |
51%
|
1973 |
54%
|