81% (2003)

67% (1996)

67% (1999)

78% (2003)

67% (2004)

61% (2002)

70% (2004)

65% (1995)

52% (2006)

77% (1996)

83% (2006)

60% (2002)

65% (2003)

73% (2001)

90% (2005)

82% (2000)

100% (1998)

78% (2000)

76% (1999)

80% (2005)