73% (2006)

71% (2005)

73% (1999)

71% (2016)

66% (2009)

69% (2012)

69% (2004)

63% (2011)

74% (1999)

69% (2003)

73% (2006)

60% (2016)

60% (2001)

66% (2009)

61% (2013)

68% (1998)

70% (2007)

68% (2001)

68% (2004)

65% (2007)