| 1985 |
77%
|
| 2008 |
46%
|
| 1989 |
51%
|
| 2015 |
38%
|
| 1992 |
57%
|
| 1995 |
57%
|
| 1989 |
50%
|
| 2011 |
37%
|
| 2011 |
34%
|
| 2015 |
71%
|
