69% (2015)

67% (2015)

62% (2012)

78% (2013)

71% (1997)

73% (2014)

79% (2016)

70% (2007)

57% (2004)

70% (2011)

58% (2016)

76% (2007)

67% (2009)

65% (2004)

72% (2010)

70% (2005)

0% (2009)

10% (2007)

40% (2002)

86% (2005)