57% (1989)

55% (1989)

63% (1989)

75% (1987)

63% (1991)

35% (1990)

50% (1989)

52% (1987)

55% (1986)

73% (1987)

10% (1993)

0% (1991)

25% (1989)

60% (1990)

57% (1987)

50% (1988)

48% (1989)

40% (1987)

35% (1993)

50% (1985)