81% (2002)

82% (2009)

85% (2000)

75% (2007)

79% (2013)

72% (2013)

70% (2010)

79% (2011)

69% (2014)

65% (2000)

67% (2009)

68% (2005)

65% (1999)

57% (2005)

69% (2007)

100% (1998)

0% (2001)

68% (1998)

68% (2006)

64% (2010)