69% (2005)

64% (1993)

64% (2015)

54% (2015)

77% (2000)

77% (2003)

84% (2005)

78% (2010)

68% (1979)

75% (2003)

76% (2009)

82% (2005)

62% (1972)

81% (2017)

68% (1996)

79% (2010)

84% (2008)

58% (1962)

73% (1980)

73% (2014)