66% (2009)

73% (1999)

69% (2004)

66% (2009)

69% (2012)

73% (2006)

65% (2007)

64% (2003)

71% (2005)

68% (1998)

74% (1999)

62% (2012)

73% (2006)

65% (1998)

65% (2008)

71% (2016)

61% (2013)

56% (2014)

63% (2004)

71% (2007)