50% (1963)

50% (1979)

42% (1968)

70% (1965)

32% (1956)

36% (1958)

0% (1962)

37% (1964)

40% (1961)

42% (1956)

10% (1970)

43% (1968)

50% (1964)

40% (1978)

47% (1961)

53% (1954)

40% (1964)