52% (1973)

58% (2001)

56% (2016)

69% (1971)

46% (1989)

63% (1984)

65% (2023)

52% (2008)

64% (1990)

53% (2014)

69% (2002)

63% (2017)

68% (1951)

57% (2016)

54% (1977)

57% (2023)

62% (1979)

70% (1985)

58% (2007)

61% (1986)