70% (1991)

63% (1971)

0% (1974)

50% (1974)

50% (1972)

50% (1972)

70% (1968)

63% (1976)

55% (1968)

50% (1977)

52% (1969)

0% (1970)

58% (1972)

68% (1968)

54% (1968)

36% (1974)

64% (1977)

50% (1967)

50% (1973)

63% (1968)