51% (1986)

52% (1986)

32% (1988)

40% (1984)

50% (1986)

80% (1983)

50% (1988)

43% (1988)

50% (1982)

23% (1991)

50% (1985)

60% (1980)

14% (1999)

27% (1987)

30% (1991)

60% (1989)

0% (1985)

40% (1982)

13% (1991)

40% (2000)