52% (1990)

47% (1970)

40% (1984)

54% (1971)

53% (1971)

40% (1993)

54% (1989)

26% (1989)

40% (1971)

37% (1990)

0% (1989)

51% (1985)

23% (1990)

64% (1989)

49% (1990)

38% (1984)

63% (1973)

43% (1968)

52% (1969)

38% (1988)