59% (1968)

60% (1965)

58% (1971)

67% (1967)

0% (1978)

50% (1986)

50% (1967)

0% (1990)

50% (1970)

57% (1979)

50% (1952)

67% (1977)

0% (1985)

0% (1983)

0% (1990)

65% (1982)

50% (1968)

50% (1972)

0% (2000)

0% (1979)