1983 |
75%
|
1995 |
56%
|
1979 |
70%
|
1978 |
70%
|
1981 |
70%
|
2003 |
65%
|
2006 |
44%
|
2010 |
63%
|
1992 |
63%
|
2008 |
63%
|
1992 |
63%
|
2000 |
53%
|