60% (1968)

77% (1963)

56% (1982)

100% (1975)

60% (1974)

60% (1966)

50% (1982)

60% (1990)

0% (1985)

40% (1977)

0% (1950)

61% (1957)

40% (1976)

63% (1983)

72% (1984)

50% (1959)

0% (1989)

30% (1976)

40% (1989)

0% (1982)