47% (1975)

50% (1975)

63% (1973)

50% (1969)

60% (1965)

55% (1984)

70% (1978)

76% (1984)

65% (1982)

47% (1975)

59% (1967)

60% (1982)

67% (1981)

40% (1977)

10% (1974)

64% (1982)

60% (1988)

67% (1985)

61% (1964)

46% (1976)