82% (1991)

69% (1992)

71% (1994)

74% (1993)

76% (1991)

66% (1993)

63% (1992)

73% (1999)

67% (1992)

78% (1999)

73% (1995)

59% (1992)

75% (1991)

64% (1993)

72% (1995)

64% (1995)

70% (1998)

58% (1995)

75% (1992)

67% (1993)