1967 |
75%
|
1984 |
60%
|
1971 |
79%
|
1987 |
46%
|
1982 |
71%
|
1984 |
71%
|
2009 |
51%
|
1973 |
64%
|
1989 |
35%
|
1988 |
43%
|
1971 |
46%
|
1972 |
41%
|
1972 |
47%
|
1973 |
45%
|