2008 |
75%
|
2007 |
66%
|
2002 |
45%
|
1975 |
69%
|
2008 |
40%
|
1963 |
82%
|
1985 |
78%
|
1959 |
78%
|
2007 |
78%
|
2006 |
65%
|