2005 |
67%
|
1972 |
50%
|
1980 |
46%
|
1973 |
62%
|
1974 |
38%
|
1982 |
31%
|
2015 |
56%
|
1980 |
40%
|
1973 |
50%
|
1974 |
38%
|
1975 |
50%
|
1985 |
74%
|
1976 |
52%
|
1985 |
56%
|
1985 |
55%
|
1987 |
56%
|
1971 |
50%
|
1973 |
46%
|
1973 |
30%
|
1990 |
41%
|