79% (2007)

81% (2007)

64% (2009)

78% (2007)

59% (2008)

61% (2009)

59% (2010)

63% (2010)

69% (2008)

63% (2012)

69% (2006)

66% (2008)

59% (2005)

63% (2008)

72% (2009)

54% (2009)

64% (2011)

65% (2007)

68% (2007)

58% (2007)