65% (1996)

50% (1993)

75% (1994)

0% (1993)

68% (1994)

73% (1987)

45% (1995)

80% (1987)

65% (1989)

69% (1997)

59% (1994)

72% (1988)

51% (1988)

60% (1999)

46% (1988)

66% (1987)

54% (1998)

70% (1995)

51% (1989)

58% (1995)