64% (1953)

71% (1987)

70% (1981)

0% (1981)

0% (1986)

0% (1979)

70% (1989)

0% (1983)

70% (1989)

62% (1992)

0% (1986)

70% (1982)

50% (1984)

0% (1990)

10% (1987)

0% (1987)

80% (1984)

0% (1986)

0% (1983)

0% (1980)