| 2011 |
31%
|
| 2011 |
41%
|
| 2006 |
37%
|
| 2006 |
40%
|
| 2006 |
32%
|
| 2007 |
44%
|
| 2009 |
37%
|
| 2007 |
23%
|
| 2003 |
38%
|
