2001 |
81%
|
1992 |
80%
|
1989 |
76%
|
2000 |
74%
|
1993 |
69%
|
1996 |
66%
|
1985 |
58%
|
1999 |
74%
|
1989 |
79%
|
1988 |
79%
|
1991 |
79%
|
1992 |
79%
|
1994 |
79%
|
1990 |
79%
|
1993 |
79%
|
1997 |
64%
|
1998 |
64%
|
1998 |
48%
|
1977 |
70%
|
1994 |
73%
|
1977 |
70%
|
1983 |
71%
|
1983 |
80%
|
1984 |
80%
|
1985 |
80%
|
1987 |
70%
|
2002 |
64%
|
1995 |
66%
|
1997 |
63%
|
1983 |
54%
|