71% (1985)

48% (1984)

60% (1984)

50% (1983)

0% (1986)

43% (1987)

60% (1986)

67% (1984)

40% (1985)

69% (1983)

0% (1986)

48% (1953)

63% (1987)

50% (1987)

75% (1985)

37% (1983)

58% (1982)

63% (1983)

61% (1982)

66% (1983)