66% (2009)

74% (2006)

72% (2006)

73% (1999)

69% (2012)

71% (2005)

69% (2003)

68% (2001)

66% (2009)

64% (2003)

66% (2011)

69% (2004)

70% (2007)

71% (2016)

68% (2004)

74% (1999)

62% (2012)

59% (2001)

61% (2013)

61% (2001)