71% (1967)

38% (1977)

60% (1986)

67% (1938)

71% (1933)

57% (2015)

67% (1944)

63% (1975)

64% (1954)

60% (1992)

61% (1998)

61% (2020)

55% (1985)

63% (1989)

51% (2001)

56% (2011)

65% (1929)

64% (1965)

74% (1932)

48% (2002)