68% (1972)

60% (1973)

60% (1974)

58% (1973)

38% (1985)

0% (1973)

70% (1974)

50% (1972)

0% (1979)

80% (1985)

67% (1973)

45% (1980)

48% (1981)

47% (1979)

57% (1972)

56% (1976)

80% (1981)

10% (1972)

0% (1967)

0% (1978)