54% (1981)

62% (1980)

62% (2024)

71% (2009)

75% (1964)

70% (2013)

40% (1974)

68% (1957)

77% (1998)

65% (2024)

58% (2023)

57% (2015)

66% (2003)

78% (1961)

68% (2021)

63% (2016)

52% (2007)

54% (1968)

68% (1960)

74% (1995)