64% (1957)

62% (2012)

61% (1972)

66% (2018)

69% (2012)

63% (2020)

63% (2020)

68% (1992)

67% (1987)

64% (1962)

64% (2007)

63% (2013)

64% (2014)

53% (2016)

53% (2019)

73% (2010)

66% (1992)

56% (2008)

77% (2007)

43% (2007)