2007 |
81%
|
2005 |
84%
|
1993 |
86%
|
1989 |
72%
|
1982 |
69%
|
1997 |
56%
|
1993 |
56%
|
1991 |
52%
|
1984 |
66%
|
1998 |
52%
|