50% (1980)

72% (1961)

55% (1955)

63% (1963)

50% (1970)

70% (1962)

52% (1957)

50% (1980)

47% (1982)

50% (1967)

50% (1957)

54% (1955)

50% (1957)

52% (1956)

55% (1958)

50% (1957)

0% (1949)

48% (1973)

50% (1958)

50% (1973)