64% (1993)

64% (2015)

68% (2005)

69% (2001)

84% (2005)

54% (2015)

77% (2000)

73% (1988)

78% (2010)

75% (2009)

67% (1968)

77% (2003)

68% (1996)

75% (2003)

74% (1951)

61% (1954)

77% (1967)

77% (1960)

74% (2000)

82% (2005)