50% (1989)

10% (1987)

0% (1963)

70% (1968)

0% (1981)

62% (1987)

30% (1986)

49% (1955)

0% (1987)

47% (1982)

0% (1976)

0% (1986)

0% (1983)

46% (1968)

0% (1989)

0% (1976)

53% (1984)

72% (1957)

53% (1985)

70% (1956)