43% (1975)

20% (1976)

50% (1969)

20% (1981)

25% (1969)

66% (1963)

50% (1975)

0% (1977)

60% (1963)

57% (1978)

40% (1977)

47% (1978)

58% (1977)

48% (1982)

47% (1974)

40% (1975)

60% (1973)

50% (1985)

50% (1977)

56% (1975)