56% (1969)

47% (1970)

0% (1971)

0% (1971)

64% (1976)

68% (1970)

10% (1975)

0% (1965)

45% (1974)

80% (1965)

0% (1967)

55% (1969)

50% (1974)

73% (1975)

54% (1978)

0% (1967)

57% (1973)

0% (1966)

30% (1973)

60% (1973)