63% (1990)

52% (1988)

71% (2002)

59% (1984)

50% (2002)

50% (1993)

40% (1990)

60% (1988)

70% (1987)

0% (1978)

70% (1997)

52% (1985)

85% (1973)

59% (1999)

67% (2002)

72% (1999)

0% (2002)

68% (1993)

95% (1998)

80% (1987)