80% (1994)

76% (2005)

63% (2006)

63% (2005)

67% (2006)

68% (2010)

71% (1994)

63% (2010)

66% (2002)

74% (2008)

73% (2011)

55% (2006)

65% (2006)

68% (2004)

62% (2004)

59% (2004)

63% (2008)

68% (2004)

81% (2011)

59% (2009)