78% (1982)

80% (1972)

81% (1974)

76% (1968)

76% (1969)

73% (1976)

60% (2001)

69% (1969)

62% (1971)

0% (1979)

90% (1974)

69% (1984)

68% (1984)

53% (1977)

0% (1976)

70% (1970)

0% (1978)

8% (1982)

55% (1981)

66% (1979)