78% (1995)

76% (2001)

81% (2005)

82% (1997)

72% (1999)

74% (2000)

69% (1996)

53% (2005)

68% (1998)

53% (2003)

78% (2004)

77% (1997)

74% (1999)

72% (2002)

70% (1996)

77% (1999)

61% (1996)

65% (2000)

68% (2001)

100% (1995)