50% (1987)

48% (1984)

60% (1984)

50% (1983)

64% (1984)

71% (1985)

66% (1983)

65% (1984)

63% (1987)

40% (1985)

60% (1984)

43% (1987)

63% (1983)

0% (1985)

58% (1986)

50% (1984)

69% (1983)

37% (1983)

0% (1986)

61% (1982)