80% (1979)

0% (1979)

80% (1979)

40% (1979)

60% (1979)

0% (1974)

40% (1978)

0% (1984)

45% (1973)

35% (1979)

0% (1977)

40% (1983)

0% (1976)

0% (1976)

0% (1984)

40% (1952)