82% (1976)

57% (1976)

67% (1972)

67% (1982)

74% (1985)

64% (1983)

67% (1984)

50% (1983)

75% (1980)

80% (1977)

70% (1977)

57% (1974)

55% (1982)

65% (1975)

40% (1983)

59% (1982)

45% (1979)

57% (1986)

64% (1974)

57% (1976)