67% (2006)

74% (2004)

68% (2005)

64% (2004)

20% (2007)

50% (2006)

66% (2008)

58% (2006)

42% (2004)

80% (2007)

60% (2003)

63% (2005)

30% (2005)

52% (2004)

62% (2005)

27% (2004)