1977 |
38%
|
1979 |
67%
|
1982 |
75%
|
1981 |
71%
|
1975 |
75%
|
1981 |
71%
|
1977 |
64%
|
1983 |
66%
|
1982 |
66%
|
1980 |
63%
|
1980 |
67%
|
1979 |
54%
|