61% (2008)

66% (2014)

57% (2016)

56% (2012)

54% (2007)

70% (2008)

69% (2009)

54% (2013)

61% (2017)

62% (2006)

76% (2011)

73% (2012)

70% (2013)

63% (2016)

63% (2007)

64% (2008)

37% (2010)

60% (2010)

67% (2009)

74% (2016)