20% (1984)

40% (1940)

60% (1955)

40% (1989)

72% (1955)

45% (1980)

65% (1960)

60% (1991)

40% (1978)

100% (1984)

46% (1973)

56% (1982)

0% (1987)

0% (1949)

0% (1976)

45% (1939)

0% (1921)

35% (1980)

80% (1945)

25% (1974)