55% (1986)

71% (1957)

47% (1970)

56% (1964)

63% (1965)

62% (1965)

37% (1969)

48% (1981)

60% (1965)

56% (1964)

52% (1966)

45% (1965)

55% (1973)

60% (1966)

51% (1965)

0% (1985)

52% (1966)

49% (1972)

57% (1968)

56% (1965)