61% (1986)

51% (1972)

68% (1972)

67% (1988)

63% (1983)

73% (1985)

54% (1985)

32% (1988)

60% (1987)

50% (1986)

65% (1970)

73% (1988)

33% (1984)

53% (1983)

47% (1993)

68% (1970)

60% (1988)

35% (1991)

58% (1985)

50% (1994)