1990 |
27%
|
2003 |
33%
|
2015 |
38%
|
2003 |
44%
|
2004 |
53%
|
2000 |
47%
|
2006 |
39%
|
2005 |
63%
|
2011 |
43%
|
1994 |
56%
|