80% (2007)

81% (2007)

64% (2009)

78% (2007)

61% (2009)

59% (2010)

59% (2008)

68% (2008)

69% (2006)

63% (2010)

66% (2008)

59% (2005)

54% (2009)

70% (2010)

68% (2007)

64% (2011)

63% (2008)

65% (2007)

63% (2012)

72% (2009)