2012 |
57%
|
2001 |
64%
|
2015 |
56%
|
1987 |
42%
|
1978 |
49%
|
2016 |
59%
|
2012 |
54%
|
1980 |
59%
|
1984 |
63%
|
1982 |
58%
|
1985 |
64%
|
1982 |
--
|
2004 |
--
|
1987 |
--
|
2007 |
--
|