73% (1991)

59% (1990)

72% (1993)

68% (1991)

49% (1985)

47% (1987)

58% (2002)

67% (1983)

62% (1993)

74% (1990)

59% (1996)

53% (1985)

73% (1989)

65% (1995)

66% (1986)

58% (1993)

31% (1983)

45% (1986)

55% (1991)

65% (1995)