62% (1985)

76% (1963)

60% (1981)

75% (1964)

0% (1984)

63% (1975)

0% (1987)

0% (1980)

42% (1972)

44% (1987)

46% (1986)

62% (1976)

57% (1970)

62% (1978)

80% (1985)

30% (1975)

55% (1986)

47% (1978)

65% (1982)

70% (1976)