70% (1984)

90% (2007)

78% (1991)

50% (1985)

64% (2014)

60% (1986)

50% (1989)

65% (1981)

72% (1973)

77% (1988)

80% (1966)

64% (1984)

58% (2012)

0% (1998)

69% (1996)

68% (2010)

52% (1952)

71% (1978)

60% (1961)

0% (1952)