60% (1972)

33% (1982)

43% (1984)

40% (1968)

58% (1970)

45% (1970)

75% (1971)

60% (1967)

38% (1960)

65% (1969)

60% (1971)

0% (1972)

60% (1970)

70% (1969)

62% (1966)

75% (1969)

0% (1968)

35% (1981)

50% (1970)

70% (1970)