56% (1992)

35% (1985)

60% (1978)

80% (1973)

85% (1965)

0% (1986)

80% (1977)

56% (1968)

0% (1972)

60% (1983)

50% (1977)

100% (1972)

40% (1958)

0% (1973)

0% (1977)

0% (1977)

0% (1978)

50% (1947)

0% (1982)

0% (1972)