| 2009 |
67%
|
| 2003 |
69%
|
| 1996 |
62%
|
| 1983 |
75%
|
| 2000 |
58%
|
| 1997 |
56%
|
| 1993 |
56%
|
| 1979 |
65%
|
| 1981 |
48%
|
| 1974 |
53%
|
| 2010 |
73%
|
| 1972 |
57%
|
| 1972 |
47%
|
| 1975 |
58%
|
