1998 |
83%
|
2013 |
75%
|
2014 |
66%
|
2006 |
60%
|
2015 |
65%
|
1999 |
74%
|
2002 |
72%
|
1996 |
55%
|
2002 |
76%
|
2002 |
72%
|
2005 |
73%
|
2008 |
75%
|
2007 |
68%
|
2007 |
73%
|
2008 |
75%
|
1998 |
77%
|
2007 |
66%
|
2002 |
69%
|