66% (2006)

55% (2012)

70% (2006)

61% (2004)

76% (2016)

0% (1970)

58% (1987)

0% (2009)

40% (2003)

10% (2006)

0% (1991)

20% (2008)

20% (2008)

0% (2011)

60% (2005)

50% (2001)

45% (1997)

0% (2005)

10% (2008)

65% (2015)