61% (1989)

67% (1972)

81% (1984)

71% (1975)

50% (1972)

80% (1990)

73% (2016)

75% (1992)

67% (1979)

60% (1968)

65% (2009)

58% (1993)

74% (1977)

55% (1993)

77% (1971)

71% (1975)

78% (2002)

76% (2007)

69% (2011)

73% (1994)