61% (1968)

73% (2002)

72% (2008)

68% (2020)

61% (1946)

61% (1934)

70% (2016)

71% (2012)

74% (1990)

69% (2012)

69% (1986)

60% (2013)

59% (2019)

67% (2016)

82% (1967)

72% (2011)

66% (2001)

61% (1973)

74% (2016)

0% (1970)