48% (1982)

44% (1986)

0% (1981)

45% (1983)

27% (1982)

15% (1983)

50% (1985)

0% (1982)

25% (1986)

0% (1982)

38% (1983)

70% (1983)

10% (1985)

0% (1964)

30% (1985)

70% (1986)

39% (1983)

45% (1984)

0% (1964)

80% (1984)