70% (1948)

60% (1957)

50% (1996)

57% (1962)

0% (1991)

40% (1988)

45% (1961)

40% (1977)

0% (1996)

48% (1969)

52% (1960)

60% (1983)

40% (1956)

50% (1974)

65% (1965)

60% (1952)

0% (1956)

40% (1971)

50% (1955)

40% (1955)