70% (1985)

54% (1971)

60% (1980)

59% (1978)

73% (1980)

77% (1981)

0% (1973)

0% (1972)

0% (1972)

50% (1983)

40% (1982)

0% (1984)

23% (1986)

0% (1976)

60% (1979)

90% (1971)

0% (1976)

0% (1975)

0% (1986)

0% (1973)