78% (1995)

53% (2003)

81% (1997)

76% (2001)

76% (2000)

79% (2004)

72% (1996)

81% (2005)

77% (1997)

77% (1999)

73% (1999)

60% (1996)

72% (2002)

82% (2001)

93% (2003)

64% (2000)

68% (2001)

83% (2002)

68% (1996)

67% (1999)