76% (1960)

73% (1937)

71% (1938)

56% (2009)

61% (1968)

63% (2009)

66% (2017)

60% (1959)

62% (1969)

65% (1964)

50% (1936)

50% (1962)

45% (1937)

68% (2016)

0% (1947)