2007 |
37%
|
2012 |
45%
|
2008 |
41%
|
2009 |
42%
|
2007 |
39%
|
2009 |
37%
|
2007 |
24%
|
2009 |
40%
|
2010 |
37%
|
2012 |
45%
|