74% (2010)

70% (2008)

76% (2009)

69% (2002)

71% (2005)

70% (2006)

70% (2004)

72% (2012)

74% (2006)

62% (2007)

72% (2009)

69% (2014)

71% (2004)

69% (2008)

68% (2009)

66% (2009)

68% (1992)

73% (1998)

61% (2009)

73% (2013)