53% (2004)

80% (2005)

77% (1994)

64% (1997)

67% (1999)

77% (1999)

95% (2005)

68% (1998)

58% (2000)

52% (1999)

79% (2000)

90% (1996)

74% (1995)

69% (1999)

68% (1998)

81% (2001)

53% (2005)

71% (1996)

20% (2000)

60% (1995)