2014 |
64%
|
2013 |
66%
|
2009 |
43%
|
2012 |
35%
|
2013 |
35%
|
2016 |
28%
|
2011 |
37%
|
2015 |
36%
|
2014 |
49%
|
2016 |
36%
|