1996 |
82%
|
2017 |
74%
|
2011 |
80%
|
2000 |
75%
|
2016 |
62%
|
2002 |
70%
|
2000 |
72%
|
1996 |
61%
|
2002 |
58%
|
2005 |
64%
|
2007 |
64%
|
2003 |
60%
|