60% (1980)

52% (1986)

50% (1982)

51% (1986)

60% (1989)

50% (1988)

23% (1991)

50% (1986)

28% (1987)

40% (1982)

48% (1989)

37% (1984)

40% (2002)

30% (1985)

80% (1983)

43% (1988)

50% (1983)

0% (1990)

50% (1985)

14% (1999)