79% (1972)

78% (1982)

81% (1974)

63% (1971)

76% (1968)

75% (1969)

69% (1969)

72% (1976)

69% (1984)

60% (2001)

68% (1984)

53% (1977)

61% (1986)

65% (1979)

55% (1981)

90% (1974)

71% (1976)

70% (1970)

0% (1976)

0% (1978)