61% (2007)

67% (2003)

68% (2004)

70% (2007)

51% (2005)

44% (2008)

52% (2005)

58% (2005)

43% (2008)

68% (2007)

56% (2004)

54% (2005)

76% (2006)

65% (2006)

37% (2004)

62% (2005)

64% (2008)

68% (2006)

42% (2008)

64% (2003)