70% (1970)

35% (1988)

48% (1989)

40% (1976)

72% (1964)

0% (1985)

0% (1960)

70% (1959)

46% (1977)

70% (1969)

41% (1966)

0% (1958)

50% (1989)

0% (1982)

0% (1952)

0% (1974)

0% (1966)

70% (1981)

90% (1965)

50% (1934)