1999 |
74%
|
1992 |
90%
|
1983 |
75%
|
1983 |
75%
|
1984 |
75%
|
1980 |
62%
|
1987 |
76%
|
1976 |
79%
|
1975 |
79%
|
1974 |
79%
|
1978 |
75%
|
1980 |
75%
|
1979 |
75%
|
1977 |
75%
|
1975 |
75%
|
1983 |
75%
|
1984 |
75%
|
1976 |
75%
|
1982 |
75%
|
1981 |
75%
|
1975 |
75%
|
1985 |
71%
|
1983 |
71%
|
1989 |
63%
|
1990 |
70%
|
1990 |
73%
|
1973 |
65%
|
1975 |
58%
|
1991 |
41%
|
1977 |
57%
|