64% (1977)

70% (1977)

0% (1972)

68% (1978)

0% (1977)

56% (1973)

48% (1976)

10% (1973)

50% (1985)

0% (1987)

53% (1987)

0% (1977)

57% (1977)

70% (1986)

0% (1983)

20% (1980)

57% (1976)

0% (1974)

50% (1986)

62% (1987)