76% (2005)

70% (2004)

82% (2012)

65% (2010)

75% (2007)

48% (2009)

72% (2006)

79% (2006)

64% (2013)

81% (2006)

67% (2010)

59% (2009)

69% (2008)

70% (2012)

76% (2011)

82% (2009)

68% (2009)

85% (2006)

68% (2010)

67% (2008)