78% (1987)

82% (2004)

50% (1972)

71% (1975)

81% (1984)

75% (1992)

55% (1993)

59% (2002)

77% (1975)

37% (2007)

56% (1962)

76% (2007)

65% (2009)

78% (2002)

71% (1975)

80% (1990)

58% (1993)

73% (2016)

60% (1968)

69% (2002)