30% (1963)

70% (1980)

35% (1996)

50% (1943)

30% (1945)

60% (1952)

50% (1952)

40% (1988)

10% (1971)

85% (1996)

52% (1976)

52% (1990)

0% (1990)

30% (1997)

65% (1965)

0% (1967)

0% (1949)

0% (1991)

0% (1956)

0% (1966)