▁in ▁adopt ing ▁the ▁agreement ; ▁however , ▁there ▁is ▁considerable ▁disag re ement ▁of ▁how ▁much ▁benefit ▁the ▁agreement ▁would ▁actually ▁produce . ▁A ▁study ▁by ▁the ▁University ▁of ▁Michigan ▁found ▁that ▁if ▁all ▁trade ▁bar riers ▁in ▁agricult ure , ▁services , ▁and ▁manufact ures ▁were ▁reduced ▁by ▁ 3 3 % ▁as ▁a ▁result ▁of ▁the ▁D oh a ▁Development ▁Ag enda , ▁there ▁would ▁be ▁an ▁increase ▁in ▁global ▁w elf are ▁of ▁$ 5 7 4 . 0   b ill ion . ▁A ▁ 2 0 0 8 ▁study ▁by ▁World ▁Bank ▁Le ad ▁Econom ist ▁K ym ▁Anderson ▁found ▁that ▁global ▁income ▁could ▁increase ▁by ▁more ▁than ▁$ 3 0 0 0   b ill ion ▁per ▁year , ▁$ 2 5 0 0   b ill ion ▁of ▁which ▁would ▁go ▁to ▁the ▁developing ▁world . ▁O thers ▁had ▁been ▁predict ing ▁more ▁mod est ▁out comes , ▁e . g . ▁world ▁net ▁w elf are ▁g ains ▁r anging ▁from ▁$ 8 4   b ill ion ▁to ▁$ 2 8 7   b ill ion ▁by ▁the ▁year ▁ 2 0 1 5 . ▁Pascal ▁Lam y ▁has ▁conserv atively ▁estimated ▁that ▁the ▁deal ▁will ▁bring ▁an ▁increase ▁of ▁$ 1 3 0   b ill ion . ▁ ▁Several ▁think ▁t anks ▁and ▁public ▁organizations ▁assess ▁that ▁the ▁conclusion ▁of ▁the ▁trade ▁round ▁will ▁result ▁in ▁a ▁net ▁gain . ▁However , ▁the ▁rest ruct uring ▁and ▁adjust ment ▁costs ▁required