83% (2014)

77% (2012)

83% (2009)

79% (2004)

60% (1989)

70% (2003)

79% (1996)

56% (2012)

70% (2011)

80% (2014)

78% (2013)

75% (1985)

86% (2002)

65% (2003)

80% (2010)

65% (1960)

76% (2011)

80% (2009)

71% (2016)

79% (1999)