53% (1967)

60% (1968)

18% (1967)

57% (1966)

60% (1966)

56% (1964)

44% (1964)

45% (1970)

58% (1966)

62% (1965)

40% (1968)

55% (1964)

61% (1968)

54% (1970)

56% (1965)

50% (1964)

32% (1967)

63% (1965)

47% (1968)

57% (1964)