| 2011 |
81%
|
| 2010 |
77%
|
| 2006 |
78%
|
| 2010 |
54%
|
| 2007 |
45%
|
| 2012 |
51%
|
| 2004 |
59%
|
| 2009 |
29%
|
| 2006 |
47%
|
| 2009 |
39%
|
