70% (1985)

78% (1972)

0% (1977)

0% (1971)

80% (1972)

0% (1978)

60% (1981)

0% (1978)

95% (1974)

70% (1971)

0% (1976)

80% (1970)

0% (1990)

80% (1980)

70% (1970)

80% (1973)

0% (1968)

80% (1975)

0% (1971)

0% (1981)