60% (1935)

56% (1993)

62% (1943)

66% (2006)

60% (2010)

66% (1966)

62% (1992)

62% (1989)

66% (2013)

66% (1946)

64% (1975)

52% (2001)

68% (1977)

69% (1982)

59% (2009)

66% (1993)

65% (1985)

61% (1999)

60% (1944)

55% (1985)