79% (1972)

78% (1982)

76% (1968)

76% (1969)

81% (1974)

72% (1976)

63% (1971)

69% (1969)

69% (1984)

68% (1984)

70% (1970)

53% (1977)

60% (2001)

65% (1979)

55% (1981)

61% (1986)

90% (1974)

71% (1976)

0% (1976)

0% (1979)