61% (1974)

50% (1974)

63% (1973)

63% (1968)

42% (1971)

50% (1972)

57% (1968)

59% (1967)

62% (1969)

50% (1967)

58% (1976)

52% (1969)

54% (1967)

55% (1968)

50% (1972)

50% (1970)

50% (1975)

0% (1970)

63% (1971)

70% (1991)