| 2010 |
78%
|
| 2007 |
73%
|
| 2011 |
69%
|
| 2016 |
77%
|
| 2008 |
76%
|
| 1996 |
71%
|
| 1987 |
53%
|
| 2000 |
67%
|
| 2011 |
49%
|
| 1994 |
67%
|
| 2001 |
45%
|
| 1992 |
50%
|
| 1963 |
72%
|
| 2009 |
37%
|
