45% (1973)

71% (1954)

55% (1981)

57% (1968)

37% (1957)

20% (1976)

47% (1970)

59% (1966)

66% (1974)

55% (1970)

0% (1958)

50% (1990)

55% (1961)

58% (1977)

64% (1961)

65% (1956)

58% (1966)

58% (1964)

54% (1978)

55% (1969)