| 1999 |
71%
|
| 2003 |
55%
|
| 2007 |
61%
|
| 2003 |
69%
|
| 2008 |
60%
|
| 1999 |
67%
|
| 2004 |
60%
|
| 1973 |
75%
|
| 1974 |
73%
|
| 2005 |
54%
|
| 2006 |
67%
|
| 1972 |
66%
|
| 1981 |
53%
|
| 2002 |
55%
|
| 2004 |
55%
|
| 2003 |
68%
|
| 2000 |
62%
|
| 1979 |
63%
|
| 2003 |
75%
|
