86% (2008)

77% (2005)

74% (2009)

78% (2006)

66% (2013)

67% (2010)

58% (2006)

68% (2007)

78% (2010)

68% (2008)

49% (2010)

70% (2009)

74% (2006)

67% (2008)

70% (2005)

71% (2010)

73% (2010)

66% (2011)

69% (2009)

68% (2011)