60% (1967)

70% (1954)

61% (1932)

60% (2002)

65% (1988)

49% (1981)

63% (1998)

69% (1994)

71% (2008)

60% (1993)

71% (2015)

61% (1979)

56% (1945)

58% (2011)

63% (1975)

56% (1991)

68% (1943)

71% (1988)

64% (1984)

52% (1997)