72% (2011)

61% (2009)

61% (2011)

55% (2011)

74% (2009)

64% (2013)

65% (2007)

64% (2009)

70% (2007)

63% (2008)

81% (2010)

65% (2013)

59% (2011)

59% (2010)

60% (2011)

56% (2006)

67% (2006)

60% (2009)

72% (2009)

74% (2007)