0% (1975)

75% (1979)

33% (1990)

70% (1977)

60% (1968)

27% (1979)

55% (1978)

50% (1961)

60% (1987)

50% (1962)

42% (1987)

74% (1975)

35% (1975)

30% (1987)

50% (1982)

35% (1983)

10% (1983)

69% (1987)

50% (1964)

53% (1980)