58% (2006)

62% (2005)

69% (2014)

65% (2011)

78% (2012)

52% (2010)

69% (2010)

64% (2008)

61% (2017)

69% (2016)

69% (2014)

60% (2012)

69% (2013)

63% (2015)

56% (2012)

67% (2013)

50% (2011)

52% (2016)

61% (2017)

63% (2013)