0% (1979)

49% (1973)

40% (1979)

53% (1974)

70% (1974)

55% (1975)

37% (1972)

85% (1980)

57% (1974)

56% (1972)

0% (1967)

0% (1966)

76% (1977)

60% (1983)

60% (1991)

35% (1988)

67% (1976)

64% (1985)

63% (1990)

57% (1973)