| 1998 |
85%
|
| 2012 |
79%
|
| 1998 |
83%
|
| 2002 |
71%
|
| 2008 |
61%
|
| 2013 |
50%
|
| 2006 |
77%
|
| 1999 |
58%
|
| 2000 |
52%
|
| 2011 |
44%
|
| 1987 |
76%
|
| 1988 |
76%
|
| 1988 |
35%
|
