63% (1976)

50% (1972)

69% (1975)

54% (1978)

69% (1970)

47% (1970)

77% (1965)

56% (1969)

50% (1973)

58% (1973)

0% (1965)

10% (1975)

0% (1967)

69% (1972)

45% (1974)

0% (1966)

60% (1978)

67% (1972)

50% (1968)

10% (1972)