48% (1966)

50% (1965)

52% (1968)

45% (1947)

60% (1943)

55% (1959)

53% (1959)

53% (1960)

50% (1958)

49% (1960)

45% (1981)

0% (1965)

0% (1963)

0% (1949)

54% (1969)

35% (1963)

70% (1968)

30% (1951)

52% (1948)

42% (1963)