56% (1962)

63% (1965)

0% (1985)

60% (1987)

60% (1956)

72% (1971)

60% (1984)

10% (1966)

55% (1991)

66% (1967)

61% (1988)

64% (1976)

72% (1972)

41% (1990)

40% (1990)

63% (1967)

60% (1972)

60% (1973)

51% (1972)

50% (1988)