66% (1983)

61% (1970)

43% (1983)

74% (1986)

0% (1980)

66% (1982)

58% (1971)

10% (1977)

62% (1970)

57% (1977)

62% (1971)

57% (1971)

50% (1985)

59% (1971)

80% (1971)

58% (1971)

50% (1978)

60% (1971)

42% (1981)

0% (1972)