43% (1978)

41% (1990)

60% (1983)

74% (1982)

56% (1986)

45% (1982)

0% (1979)

75% (1983)

0% (1978)

52% (1983)

60% (1980)

65% (1986)

56% (1982)

70% (1987)

0% (1978)

59% (1987)

60% (1977)

34% (1989)

62% (1974)

48% (1982)