60% (1955)

56% (2003)

59% (2020)

66% (2023)

71% (2015)

62% (2006)

69% (2000)

69% (1973)

73% (1991)

68% (2016)

61% (2023)

64% (1993)

71% (2020)

66% (2010)

57% (2009)

67% (1980)

66% (1987)

51% (2014)

66% (2010)

57% (2006)