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[ÇóÖú] a progressivity index for social security

a progressivity index for social security  
social security progressivity can be described in various ways
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phu_grassman: ½ð±Ò+1, thanks for your help. 2012-11-07 19:16:19
wendupiaopia: ½ð±Ò+5, ·­ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2012-11-08 00:53:31
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[¿¼ÑÐ] 324Çóµ÷¼Á +8 hanamiko 2026-03-26 10/500 2026-03-27 08:06 by hypershenger
[¿¼ÑÐ] 081200-11408-276ѧ˶Çóµ÷¼Á +4 ´Þwj 2026-03-26 4/200 2026-03-27 08:04 by chemisry
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