40% (2007)

0% (1981)

40% (1991)

78% (1997)

57% (2010)

70% (2008)

0% (2016)

100% (1980)

65% (2009)

0% (1975)

70% (2007)

0% (1968)

0% (1997)

0% (2011)

0% (2005)

70% (2009)

0% (2005)

0% (1991)

0% (2009)

0% (2005)