67% (1995)

63% (1991)

56% (1988)

63% (2001)

65% (1995)

72% (1989)

67% (1995)

74% (1999)

57% (1997)

53% (1987)

66% (1991)

62% (2000)

45% (1989)

49% (1997)

61% (2000)

56% (1989)

69% (1990)

61% (1987)

0% (1999)

53% (1988)