60% (1981)

80% (1987)

48% (1973)

20% (1979)

60% (1982)

55% (1976)

67% (1967)

40% (1976)

70% (1966)

0% (1974)

70% (1974)

85% (1974)

56% (1978)

0% (1980)

90% (1973)

70% (1970)

60% (1979)

70% (1966)

70% (1982)

62% (1985)