| 2006 |
60%
|
| 1999 |
74%
|
| 1992 |
71%
|
| 1970 |
74%
|
| 1997 |
61%
|
| 2006 |
75%
|
| 1989 |
51%
|
| 2005 |
68%
|
| 2004 |
60%
|
| 1981 |
56%
|
