56% (1986)

50% (1983)

75% (1984)

56% (1990)

42% (1983)

82% (1984)

25% (1990)

59% (1987)

0% (1990)

46% (1986)

50% (1988)

51% (1986)

60% (1986)

10% (1990)

68% (1983)

70% (1983)

40% (1982)

70% (1989)

0% (1989)

0% (1991)