| 2011 |
70%
|
| 2009 |
58%
|
| 1982 |
72%
|
| 1996 |
54%
|
| 1990 |
63%
|
| 1981 |
63%
|
| 2011 |
22%
|
| 2011 |
39%
|
| 2007 |
74%
|
| 2012 |
28%
|
