68% (2015)

69% (2015)

70% (1997)

78% (2013)

77% (2007)

79% (2016)

73% (2014)

57% (2004)

71% (2011)

64% (2004)

70% (2007)

62% (2012)

59% (2016)

66% (2009)

70% (2005)

86% (2005)

10% (2007)

71% (2010)

0% (2009)

20% (2003)