1993 |
67%
|
1991 |
67%
|
1992 |
67%
|
1989 |
76%
|
1993 |
68%
|
1994 |
68%
|
1999 |
61%
|
1996 |
62%
|
1995 |
55%
|
1990 |
65%
|