65% (1955)

69% (2005)

45% (2013)

68% (1998)

58% (1999)

80% (1981)

0% (2001)

69% (2012)

78% (2009)

64% (2015)

63% (1962)

76% (2007)

78% (2010)

73% (1977)

0% (1980)

87% (2013)

72% (1969)

81% (2005)

100% (2014)

38% (2005)