| 1991 |
69%
|
| 2004 |
88%
|
| 1994 |
71%
|
| 1996 |
67%
|
| 2000 |
80%
|
| 1988 |
78%
|
| 2003 |
44%
|
| 1997 |
52%
|
| 2012 |
73%
|
