82% (2009)

82% (2012)

74% (2005)

68% (2003)

77% (2012)

72% (2010)

74% (2007)

64% (2013)

63% (2007)

76% (2011)

57% (2005)

64% (2008)

78% (2012)

57% (2009)

71% (2008)

66% (2007)

46% (2002)

68% (2009)

60% (2006)

81% (2011)