57% (1998)

59% (1985)

49% (1984)

68% (1998)

58% (2007)

0% (1970)

49% (1988)

0% (1970)

63% (1992)

43% (1999)

67% (1987)

39% (2003)

72% (1984)

64% (1986)

42% (1988)

67% (1986)

49% (1989)

0% (1970)

45% (1988)

65% (1987)