1995 |
83%
|
1999 |
79%
|
1991 |
57%
|
1988 |
57%
|
1987 |
55%
|
1998 |
29%
|
1990 |
63%
|
1994 |
46%
|
1998 |
44%
|
2001 |
56%
|
1993 |
48%
|
1995 |
45%
|
1997 |
44%
|
1985 |
49%
|
1988 |
71%
|
1983 |
68%
|
1992 |
64%
|
1986 |
68%
|