52% (1985)

50% (1979)

54% (1976)

55% (1957)

50% (1962)

56% (1975)

54% (1934)

40% (1960)

35% (1958)

0% (1976)

70% (1963)

0% (1937)

45% (1955)

30% (1958)

50% (1962)

0% (1975)