78% (1982)

79% (1972)

75% (1968)

81% (1974)

73% (1976)

62% (1971)

75% (1969)

70% (1970)

71% (1976)

70% (1969)

90% (1974)

53% (1977)

60% (2001)

55% (1981)

68% (1984)

69% (1984)

0% (1979)

66% (1979)

0% (1987)

61% (1986)