1992 |
90%
|
1989 |
79%
|
1987 |
79%
|
1988 |
79%
|
1991 |
79%
|
1992 |
79%
|
1994 |
79%
|
1993 |
79%
|
1990 |
79%
|
1996 |
79%
|
1995 |
79%
|
1985 |
80%
|
1987 |
80%
|
1984 |
75%
|
1983 |
75%
|
1978 |
70%
|
1985 |
74%
|
1987 |
74%
|
2017 |
68%
|
1996 |
39%
|
1979 |
62%
|