61% (1967)

60% (1962)

20% (1968)

60% (1964)

20% (1965)

41% (1969)

50% (1966)

0% (1962)

50% (1962)

50% (1960)

0% (1968)

70% (1965)

40% (1949)

45% (1969)

54% (1967)

57% (1950)

60% (1965)

60% (1950)

0% (1967)

10% (1969)