2014 |
43%
|
1990 |
49%
|
2012 |
30%
|
2012 |
45%
|
2013 |
24%
|
2008 |
41%
|
2009 |
42%
|
2009 |
37%
|
2009 |
40%
|
2011 |
40%
|
2010 |
37%
|
2012 |
45%
|
2014 |
38%
|