请问苏辙主张行青苗法的这段言论是在哪一年发表的？

请问苏辙主张行青苗法的这段言论是在哪一年发表的？
出处：栾城应诏集卷十《进策五道 【民政下】 第二道》
“天下之人，无田以为农，无财以为商，禁而勿贷，不免转死于沟壑。使富民为贷，则用不仁之法，收太半之息，不然，亦不免脱衣避屋以为质，民受其困，而上不享其利。《周官》之法，使民之贷者与其有司辨其贵贱，而以国服为息，今可使郡县尽贷，而任之以其土著之民。
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[color=Silver][[i] 本帖最后由 临川介甫 于 2012-12-29 21:11 编辑 [/i]][/color]