72% (1963)

53% (1994)

57% (2004)

62% (1972)

76% (1962)

76% (1953)

70% (1961)

64% (1976)

58% (2013)

60% (1978)

73% (1970)

65% (1964)

62% (1951)

58% (1957)

63% (2019)

62% (1960)

63% (1957)

66% (2012)

61% (1952)

50% (1949)