82% (1994)

60% (1980)

0% (1976)

67% (1986)

40% (1976)

0% (1983)

0% (1975)

70% (1971)

0% (1974)

0% (1978)

0% (1986)

0% (1977)

85% (1983)

0% (1977)

0% (1982)

0% (1980)

70% (1963)

0% (1972)

100% (1973)

0% (1980)