1996 |
86%
|
2007 |
60%
|
2008 |
77%
|
2006 |
65%
|
1999 |
81%
|
1999 |
81%
|
2001 |
74%
|
1979 |
66%
|
1998 |
52%
|
1985 |
54%
|