80% (2007)

81% (2007)

78% (2007)

69% (2008)

63% (2010)

61% (2009)

64% (2009)

59% (2008)

68% (2007)

58% (2007)

68% (2008)

64% (2011)

55% (2009)

63% (2012)

63% (2008)

59% (2010)

69% (2006)

67% (2008)

72% (2009)

58% (2005)