60% (1980)

70% (1979)

0% (1973)

0% (1986)

0% (1978)

35% (1972)

35% (1970)

50% (1982)

0% (1978)

60% (1985)

50% (1982)

70% (1979)

45% (1983)

40% (1990)

0% (1973)

0% (1978)

0% (1980)

0% (1982)

0% (1974)

0% (1983)