60% (2009)

62% (2013)

65% (1978)

72% (2006)

84% (1968)

48% (1991)

54% (1973)

60% (1983)

52% (1971)

81% (1977)

0% (1987)

60% (1967)

50% (1964)

50% (1990)

0% (1962)

60% (1984)

60% (1963)

74% (1965)

50% (1976)

45% (1979)