70% (1956)

46% (1972)

54% (1956)

37% (1991)

51% (1993)

35% (1951)

69% (1948)

50% (1956)

44% (1981)

41% (1987)

68% (1967)

30% (1975)

45% (1951)

57% (1962)

43% (1955)

50% (1993)

54% (1969)

0% (1949)

60% (1997)

80% (1992)