10% (1990)

55% (1988)

51% (1987)

20% (1991)

59% (1989)

48% (1994)

52% (1987)

65% (1988)

68% (1989)

40% (1992)

33% (1986)

63% (1986)

37% (1987)

64% (1988)

67% (1987)

54% (1988)

58% (1989)

0% (1987)

51% (1987)

59% (1994)