2003 |
74%
|
2013 |
84%
|
2000 |
67%
|
2003 |
64%
|
2006 |
64%
|
2003 |
75%
|
2005 |
62%
|
2006 |
40%
|
2011 |
36%
|
1998 |
42%
|