78% (1995)

81% (1997)

53% (2003)

76% (2001)

75% (1999)

77% (1997)

73% (2000)

81% (2005)

70% (1996)

65% (2000)

67% (1999)

68% (2001)

79% (2004)

72% (2002)

64% (1997)

82% (1999)

77% (1999)

81% (2001)

83% (2002)

74% (1995)