65% (1960)

62% (2005)

71% (1979)

59% (1952)

60% (1983)

65% (1977)

71% (1939)

69% (1943)

72% (1949)

63% (1998)

77% (1943)

61% (1953)

64% (1955)

70% (1974)

65% (2011)

63% (1991)

69% (1950)

71% (1980)

72% (1950)

56% (1997)