| 1994 |
79%
|
| 2006 |
71%
|
| 2004 |
72%
|
| 2013 |
83%
|
| 2015 |
83%
|
| 1996 |
69%
|
| 2016 |
61%
|
| 1996 |
54%
|
| 1979 |
78%
|
| 1974 |
58%
|
| 1975 |
47%
|
