75% (1982)

55% (1988)

72% (1986)

66% (1991)

57% (1984)

0% (1986)

65% (1986)

80% (1990)

60% (1986)

40% (1992)

40% (1990)

0% (1984)

60% (1985)

25% (1985)

63% (1987)

0% (1987)

65% (1988)

46% (1982)

30% (1985)

0% (1989)