"Figure 1: Difference between the first, fifth and thirteenth iterations of unconstrained, all construction work, non-seasonally adjusted, current price","" "Great Britain, January 2016 to December 2016","" "","" "Notes","1. These data differ from the current price non-seasonally adjusted data published in Table 4 of [Output in the construction industry](https://www.ons.gov.uk/businessindustryandtrade/constructionindustry/datasets/outputintheconstructionindustry), as these data are constrained, in accordance with the [standard revisions policy for national accounts](https://www.ons.gov.uk/methodology/methodologytopicsandstatisticalconcepts/revisions/revisionspoliciesforeconomicstatistics). 2. All data included in this article is weighted data, as explained in the [Construction Output QMI](https://www.ons.gov.uk/businessindustryandtrade/constructionindustry/qmis/constructionoutputqmi). " "Unit","£ million" "","" "Month","First Iteration","Fifth Iteration","Thirteenth Iteration" "Jan ","10251","10536","10594" " Feb ","11424","11748","11816" " Mar ","12491","13001","13095" " Apr","11887","12362","12445" " May","12178","12424","12505" " Jun","12671","12967","13105" " Jul","12348","12729","12837" " Aug","12650","12980","13054" " Sep","12899","13202","13311" " Oct","13105","13277","13375" " Nov","13191","13579","13701" " Dec","12078","12258","12389"