69% (1994)

50% (1991)

68% (1994)

59% (1988)

65% (1989)

58% (1992)

60% (1990)

60% (1989)

61% (1989)

0% (1988)

50% (1993)

68% (1991)

64% (1998)

0% (1992)

65% (1993)

57% (1988)

0% (1989)

80% (1994)

40% (1987)

42% (1990)