50% (1960)

75% (1961)

0% (1972)

90% (1965)

40% (1982)

0% (1983)

50% (1988)

20% (1989)

50% (1991)

10% (1977)

60% (1969)

0% (1972)

0% (1974)

0% (1980)

70% (1970)

0% (1984)

70% (1968)

60% (1963)

50% (1991)

0% (1962)