55% (1970)

57% (1950)

59% (1953)

42% (1987)

58% (1956)

53% (1956)

53% (1953)

42% (1985)

57% (1950)

57% (1948)

55% (1942)

58% (1965)

50% (1949)

53% (1956)

50% (1964)

55% (1966)

50% (1994)

52% (1951)

57% (1954)

34% (1981)