71% (1983)

54% (1991)

0% (1979)

50% (1990)

0% (1984)

0% (1979)

59% (1975)

60% (1969)

47% (1974)

65% (1986)

69% (1979)

56% (1989)

50% (1989)

78% (1980)

42% (1943)

27% (1984)

46% (1977)

63% (1978)

60% (1987)

51% (1939)