73% (1988)

30% (1969)

60% (1983)

52% (1978)

0% (1985)

80% (1987)

80% (1976)

61% (1977)

68% (1972)

80% (1984)

0% (1969)

27% (1986)

60% (1976)

70% (1972)

0% (1984)

60% (1968)

80% (1985)

42% (1982)

72% (1979)

0% (1983)