▁ 2 3 , 5 0 0 ▁eu ros . ▁The ▁G DP ▁of ▁the ▁Lo ire - At lant ique ▁département ▁is ▁around ▁ 2 6   b ill ion ▁eu ros , ▁and ▁the ▁G DP ▁of ▁the ▁five ▁historical ▁Bre ton ▁départ ements ▁would ▁be ▁at ▁around ▁ 1 0 8   b ill ion ▁eu ros . ▁ ▁Dem ograph ics ▁ ▁In ▁ 2 0 1 2 , ▁the ▁population ▁in ▁Region ▁Brit t any ▁was ▁estimated ▁to ▁ 3 , 1 9 5 , 3 1 7 ▁and ▁Lo ire - At lant ique ▁had ▁around ▁ 1 , 3 0 3 , 1 0 3 ▁inhabitants , ▁thus ▁historical ▁Brit t any ' s ▁population ▁can ▁be ▁estimated ▁at ▁ 4 , 5 5 2 , 9 1 8 , ▁the ▁highest ▁in ▁its ▁history . ▁The ▁population ▁in ▁Region ▁Brit t any ▁had ▁grown ▁by ▁ 0 . 9 % ▁between ▁ 1 9 9 9 ▁and ▁ 2 0 0 0 , ▁and ▁the ▁growth ▁rate ▁reached ▁more ▁than ▁ 1 % ▁in ▁Il le - et - V ila ine ▁and ▁Mor b ih an . ▁The ▁region ▁around ▁R ennes ▁and ▁the ▁south ▁are ▁the ▁more ▁attract ive ▁areas , ▁whereas ▁the ▁population ▁is ▁decl ining ▁in ▁the ▁centre ▁and ▁in ▁the ▁western most ▁parts . ▁While ▁most ▁of ▁the ▁metropol itan ▁areas ▁are ▁growing , ▁the ▁cities ▁themselves ▁tend ▁to ▁st agn ate ▁or ▁re gress , ▁such ▁as ▁for ▁Br