2009 |
84%
|
1993 |
86%
|
1999 |
66%
|
2010 |
75%
|
2007 |
57%
|
2006 |
65%
|
1999 |
82%
|
1988 |
77%
|
2006 |
73%
|
1997 |
52%
|