70% (1983)

60% (1954)

50% (1937)

49% (1978)

48% (1985)

57% (1987)

60% (1968)

41% (1982)

50% (1988)

42% (1964)

50% (1990)

40% (1991)

59% (1975)

10% (1987)

55% (1967)

47% (1969)

32% (1968)

15% (1991)

0% (1984)

58% (1953)