75% (1982)

75% (1990)

68% (1988)

0% (1987)

66% (1991)

40% (1988)

63% (1987)

67% (1986)

40% (1992)

57% (1988)

25% (1985)

0% (1989)

0% (1984)

72% (1986)

60% (1985)

42% (1992)

95% (1984)

60% (1984)

0% (1990)

0% (1992)