69% (1968)

70% (1974)

57% (1975)

62% (2017)

72% (2006)

64% (2019)

74% (2018)

69% (1977)

51% (2005)

55% (2016)

69% (2007)

52% (2023)

58% (2023)

59% (1992)

55% (1993)

73% (1971)

63% (1972)

66% (1970)

72% (1952)

58% (1963)