77% (1997)

85% (1957)

75% (2013)

68% (1975)

76% (1997)

64% (2008)

75% (2010)

80% (2005)

82% (2014)

81% (2006)

70% (2002)

51% (1966)

75% (1947)

60% (1991)

50% (2006)

85% (2014)

63% (2003)

73% (2011)

100% (1978)

80% (1987)