76% (2013)

82% (2010)

75% (2017)

77% (2012)

72% (2015)

61% (2013)

74% (2009)

74% (2010)

73% (2011)

72% (2009)

72% (2011)

66% (2011)

71% (2017)

75% (2009)

70% (2018)

69% (2010)

66% (2011)

55% (2016)

75% (2012)