73% (2001)

72% (1995)

73% (1997)

75% (1999)

68% (1995)

61% (2002)

80% (2005)

80% (2002)

67% (2004)

83% (2006)

78% (2003)

73% (1996)

68% (2004)

61% (2001)

64% (1998)

70% (2005)

82% (2000)

100% (1998)

83% (2001)

52% (2006)