68% (1998)

83% (2009)

68% (2005)

81% (2002)

79% (2011)

85% (2000)

75% (2007)

76% (2007)

79% (2013)

70% (2010)

69% (2007)

67% (2000)

72% (2013)

65% (2010)

70% (2014)

65% (1999)

65% (2000)

67% (2009)

57% (2005)

0% (2001)