67% (2008)

76% (2010)

63% (2010)

63% (2012)

65% (2011)

64% (2013)

63% (2014)

64% (2006)

64% (2017)

66% (2010)

53% (2011)

57% (2015)

55% (2011)

53% (2005)

52% (2008)

56% (2006)

63% (2010)

62% (2009)

52% (2003)

54% (2012)