63% (1940)

57% (1992)

56% (1999)

67% (1948)

55% (1992)

56% (2002)

47% (1980)

43% (1960)

46% (1975)

60% (1973)

58% (1946)

66% (1939)

42% (1965)

0% (1970)

50% (1979)

59% (1955)

57% (1992)

58% (1950)

56% (1936)

52% (1991)