| 2007 |
70%
|
| 2003 |
51%
|
| 2001 |
46%
|
| 2002 |
50%
|
| 1999 |
62%
|
| 1998 |
50%
|
| 2005 |
39%
|
| 1997 |
62%
|
| 1996 |
60%
|
