| 1994 |
86%
|
| 2016 |
81%
|
| 2012 |
59%
|
| 2007 |
53%
|
| 1980 |
72%
|
| 2008 |
77%
|
| 1987 |
67%
|
| 1997 |
77%
|
| 2004 |
73%
|
| 2002 |
73%
|
| 1996 |
69%
|
| 2002 |
71%
|
| 2003 |
61%
|
