73% (1999)

66% (2009)

74% (2006)

73% (2006)

69% (2012)

72% (2005)

74% (1999)

66% (2009)

66% (2011)

61% (2013)

71% (2007)

71% (2016)

62% (2002)

68% (2004)

69% (2004)

61% (2016)

68% (1998)

69% (2003)

62% (2011)

61% (2001)