0% (1974)

58% (1967)

63% (1971)

54% (1968)

50% (1977)

70% (1968)

58% (1972)

0% (1970)

50% (1972)

36% (1974)

64% (1977)

63% (1976)

50% (1973)

50% (1974)

70% (1991)

50% (1967)

0% (1975)

68% (1968)

52% (1969)

63% (1968)