74% (1991)

73% (1989)

63% (1991)

71% (1986)

71% (1991)

70% (1986)

59% (1986)

65% (1990)

64% (1990)

53% (1987)

50% (1987)

42% (1988)

54% (1985)

65% (1992)

0% (1986)

0% (1991)

0% (1987)

60% (1985)

0% (1982)

0% (1991)