0% (1994)

52% (1970)

50% (1975)

56% (1975)

30% (1989)

63% (1977)

60% (1972)

65% (1970)

67% (1995)

44% (1974)

43% (1969)

58% (1935)

35% (1979)

30% (1970)

38% (1972)

67% (1975)

20% (1968)

40% (1974)

44% (1975)

80% (1991)