83% (2018)

72% (2011)

65% (2007)

61% (2009)

60% (2011)

64% (2013)

72% (2011)

74% (2009)

80% (2010)

56% (2012)

59% (2011)

60% (2013)

55% (2011)

63% (2009)

58% (2018)

66% (2012)

59% (2010)

60% (2009)

69% (2007)

73% (2007)