1995 |
56%
|
2015 |
30%
|
2017 |
25%
|
2001 |
58%
|
1997 |
38%
|
2007 |
39%
|
2005 |
53%
|
2001 |
63%
|
2008 |
40%
|
2008 |
37%
|
2009 |
70%
|
1995 |
34%
|
2003 |
57%
|
2002 |
57%
|
2008 |
36%
|
2013 |
34%
|
2005 |
42%
|
2002 |
45%
|
1996 |
39%
|
2018 |
27%
|
1997 |
55%
|
1994 |
66%
|
2010 |
62%
|
1995 |
38%
|
1995 |
79%
|
1996 |
30%
|