1968 |
74%
|
1983 |
50%
|
1997 |
71%
|
1996 |
71%
|
1986 |
75%
|
1986 |
56%
|
1959 |
85%
|
1996 |
56%
|
1996 |
55%
|
1989 |
41%
|
1980 |
66%
|
1988 |
35%
|
1984 |
67%
|
1996 |
79%
|
1995 |
38%
|