55% (1973)

0% (1970)

10% (1991)

42% (1956)

62% (1960)

50% (1972)

31% (1979)

0% (1991)

0% (1928)

0% (1988)

70% (1980)

0% (1971)

0% (1986)

90% (1980)

0% (1983)

45% (1982)

70% (1980)

50% (1959)

0% (1986)

35% (1954)