60% (1970)

53% (1961)

50% (1975)

60% (1977)

70% (1960)

59% (1984)

48% (1983)

60% (1969)

61% (1959)

69% (1944)

57% (1975)

63% (1982)

61% (1980)

65% (1970)

66% (1970)

0% (1977)

58% (1955)

63% (1967)

60% (1980)

60% (1968)