82% (1958)

77% (1982)

40% (1966)

59% (1975)

0% (1976)

60% (1985)

55% (1969)

55% (1976)

40% (1959)

62% (1979)

0% (1957)

60% (1985)

60% (1968)

40% (1979)

46% (1973)

50% (1973)

71% (1989)

66% (1972)

67% (1980)

70% (1963)