93% (1990)

10% (1971)

80% (1977)

70% (1983)

80% (1982)

0% (1975)

80% (1994)

0% (1981)

90% (1988)

90% (1975)

64% (1983)

60% (1980)

70% (1978)

80% (1973)

70% (1978)

60% (1986)

0% (1972)

0% (1975)

60% (1969)

71% (1982)