52% (1988)

0% (1965)

63% (1981)

20% (1983)

63% (1973)

48% (1970)

31% (1979)

59% (1981)

46% (1980)

58% (1961)

58% (1955)

80% (1955)

55% (1984)

48% (1977)

50% (1965)

58% (1976)

53% (1990)

43% (1969)

39% (1978)

34% (1990)