1997 |
81%
|
2000 |
67%
|
1999 |
67%
|
2013 |
69%
|
2015 |
67%
|
2012 |
60%
|
2012 |
69%
|
2015 |
63%
|
2014 |
67%
|
2012 |
68%
|
2013 |
68%
|
2012 |
67%
|
2016 |
60%
|