| 2012 |
42%
|
| 2005 |
37%
|
| 2006 |
69%
|
| 2009 |
38%
|
| 1999 |
38%
|
| 2004 |
36%
|
| 2015 |
41%
|
| 2000 |
40%
|
| 1997 |
36%
|
| 1996 |
35%
|
