65% (1984)

55% (1991)

50% (1948)

40% (1977)

37% (1963)

60% (1972)

62% (1968)

32% (1960)

42% (1982)

53% (1966)

30% (1991)

37% (1982)

45% (1976)

0% (1980)

62% (1983)

63% (1988)

63% (1960)

52% (1969)

68% (1938)

50% (1989)