100% (1994)

73% (1994)

63% (1990)

75% (1998)

60% (1992)

85% (1992)

71% (1993)

68% (1992)

79% (1995)

64% (1996)

80% (1993)

78% (1990)

72% (1999)

71% (1998)

74% (1994)

72% (1998)

66% (1996)

78% (1999)

80% (1990)

83% (1994)