76% (1973)

59% (1966)

61% (1980)

71% (1960)

54% (1973)

78% (1972)

69% (1976)

72% (1966)

55% (1978)

43% (1982)

67% (1970)

55% (1982)

100% (1982)

80% (1983)

50% (1973)

80% (1976)

60% (1976)

100% (1983)

80% (1972)

70% (1960)