1972 |
79%
|
1984 |
71%
|
1967 |
81%
|
1994 |
39%
|
1995 |
40%
|
1995 |
44%
|
1988 |
42%
|
2000 |
49%
|
1968 |
46%
|
1997 |
41%
|
1974 |
42%
|
1972 |
58%
|