66% (1982)

77% (1983)

63% (1983)

66% (1985)

56% (1986)

56% (1985)

55% (1982)

60% (1982)

64% (1984)

50% (1985)

67% (1981)

72% (1982)

72% (1987)

70% (1985)

47% (1980)

0% (1981)

88% (1985)

0% (1982)

50% (1982)

0% (1981)