71% (1993)

77% (2017)

81% (2019)

84% (2018)

49% (1979)

72% (1986)

74% (2008)

79% (2004)

67% (1968)

85% (2016)

86% (2020)

82% (2017)

81% (2021)

83% (2015)

85% (2001)

75% (1957)

73% (2014)

75% (2007)

77% (2004)

80% (1970)