80% (2007)

81% (2007)

78% (2007)

61% (2009)

59% (2008)

63% (2009)

68% (2008)

63% (2010)

58% (2010)

64% (2011)

67% (2008)

69% (2006)

58% (2005)

68% (2007)

64% (2007)

54% (2009)

63% (2008)

59% (2007)

63% (2012)

69% (2008)