2005 |
84%
|
2009 |
58%
|
2006 |
89%
|
2015 |
42%
|
2004 |
75%
|
2007 |
75%
|
2007 |
77%
|
2007 |
57%
|
2000 |
71%
|
2001 |
71%
|
1999 |
71%
|
1987 |
76%
|
1989 |
76%
|
1988 |
76%
|
2008 |
65%
|
2011 |
65%
|
1994 |
55%
|
1989 |
67%
|
1999 |
68%
|