0% (1987)

90% (1975)

80% (1973)

80% (1986)

80% (1981)

30% (1978)

0% (1975)

80% (1978)

80% (1981)

100% (1984)

0% (1980)

80% (1975)

0% (1980)

0% (1986)

60% (1977)

20% (1982)

0% (1982)

0% (1989)

80% (1978)

0% (1992)