40% (1986)

28% (1986)

10% (1985)

34% (1993)

57% (1992)

35% (1987)

53% (1986)

62% (1993)

55% (1986)

62% (1988)

20% (1993)

20% (1992)

20% (1985)

20% (1984)

20% (1992)

44% (1990)

20% (1983)

67% (1991)

50% (1994)

0% (1992)