69% (1984)

71% (1985)

42% (1984)

27% (1977)

62% (1989)

30% (1993)

63% (1977)

0% (1977)

57% (1984)

63% (1982)

67% (1982)

0% (1982)

70% (1983)

0% (1974)

68% (1990)

80% (1977)

60% (1981)

80% (1985)

63% (1981)

10% (1989)