0% (1973)

0% (1962)

30% (1979)

58% (1981)

0% (1970)

40% (1979)

46% (1990)

70% (1961)

0% (1976)

47% (1987)

35% (1990)

0% (1971)

20% (1981)

40% (1986)

60% (1963)

0% (1974)

0% (1982)

60% (1969)

30% (1970)

0% (1982)