61% (1967)

60% (1964)

41% (1969)

60% (1962)

20% (1968)

70% (1965)

45% (1969)

54% (1967)

0% (1966)

58% (1962)

10% (1969)

58% (1968)

50% (1962)

0% (1969)

57% (1950)

57% (1963)

50% (1960)

0% (1968)

40% (1949)

50% (1966)