83% (1980)

73% (2006)

72% (1978)

70% (2020)

76% (2015)

64% (1991)

76% (2011)

79% (2008)

79% (1975)

83% (1975)

81% (1970)

74% (1993)

80% (2000)

76% (2016)

76% (1992)

74% (2018)

77% (2009)

84% (1986)

66% (1996)

71% (1995)