77% (2007)

10% (1988)

76% (1990)

73% (2009)

77% (2013)

84% (2001)

84% (2013)

69% (1980)

56% (1992)

65% (1961)

60% (1979)

82% (1985)

74% (2011)

69% (2016)

79% (2014)

58% (2009)

64% (2018)

63% (2017)

72% (2011)

79% (1989)