1977 |
45%
|
1982 |
27%
|
1973 |
47%
|
1976 |
45%
|
2010 |
77%
|
1980 |
34%
|
1983 |
36%
|
1982 |
41%
|
1974 |
54%
|
1975 |
41%
|
1983 |
34%
|
1997 |
38%
|
2002 |
29%
|
1983 |
43%
|
1975 |
45%
|
1977 |
45%
|
1980 |
47%
|
1975 |
50%
|
1998 |
28%
|
2002 |
34%
|
1999 |
32%
|
1973 |
48%
|
1980 |
52%
|
1981 |
28%
|
1981 |
59%
|