57% (1985)

65% (1982)

76% (1982)

71% (1974)

72% (1987)

61% (1979)

63% (1992)

66% (1978)

66% (1986)

0% (1989)

50% (1991)

69% (1984)

53% (1979)

30% (1979)

0% (1990)

50% (1984)

50% (1986)

50% (1983)

69% (1979)

20% (1982)