1991 |
74%
|
1993 |
74%
|
1996 |
74%
|
1992 |
74%
|
1998 |
74%
|
1996 |
67%
|
1979 |
65%
|
1980 |
65%
|
1978 |
65%
|
1977 |
65%
|
1976 |
65%
|
1974 |
79%
|
1983 |
71%
|
1974 |
84%
|
1993 |
68%
|
1964 |
72%
|
1963 |
72%
|
1978 |
57%
|
1994 |
52%
|