50% (1988)

80% (1986)

67% (1998)

76% (2000)

65% (1985)

67% (1999)

73% (1980)

60% (2002)

74% (1980)

60% (1956)

69% (2000)

72% (1980)

66% (1979)

80% (2006)

76% (1986)

60% (1989)

78% (1993)

68% (2014)

65% (2002)

83% (1977)