81% (2002)

85% (2000)

83% (2009)

79% (2013)

75% (2007)

70% (2010)

67% (2000)

79% (2011)

68% (1998)

69% (2007)

76% (2007)

72% (2013)

68% (2005)

73% (2010)

65% (2000)

70% (2014)

67% (2009)

72% (2002)

65% (1999)

75% (2010)