74% (2000)

72% (2003)

58% (2003)

66% (2002)

79% (2000)

61% (2001)

66% (2003)

52% (1999)

56% (2002)

61% (2002)

50% (2001)

60% (1999)

65% (1999)

60% (2002)

61% (2004)

65% (2001)

69% (2000)

66% (1999)

47% (2001)

76% (1997)