I kī te World Steel Association, mai i te tau 2020 ki te tīmatanga o te tau 2021, ka haere tonu te kaha o te whakaoranga o te ōhanga o Haina. Heoi, mai i te marama o Hune o tēnei tau, kua tīmata te puhoi o te whanaketanga ōhanga o Haina. Mai i te marama o Hūrae, kua kitea te tere o te whanaketanga o te umanga maitai o Haina. I heke te tono mō te maitai mā te 13.3% i te marama o Hūrae, ā, i te marama o Ākuhata mā te 18.3%. Ko te puhoi o te whanaketanga o te umanga maitai nā te kino o te rangi me ngā pakarutanga o te mate korona hou i te raumati. Heoi, ko ngā take nui ko te puhoi o te whanaketanga o te umanga hanga me ngā here a te kāwanatanga ki te hanga maitai. Ko te hekenga o te mahi a te umanga hoko whare nā te kaupapa here a te kāwanatanga o Haina ki te whakahaere kaha i te putea mō ngā kaiwhakawhanake whare i tīmata i te tau 2020. I taua wā anō, kāore te haumitanga hanganga o Haina e piki ake i te tau 2021, ā, ka pāngia hoki te whanaketanga o ana mahi hokohoko kaweake e te whakaoranga o te umanga hangahanga o te ao.
I kī te World Steel Association, nā te puhoi haere tonu o te umanga hoko whare i te tau 2021, ka pāngia te hiahia mō te maitai o Haina e te tipu kino mō te toenga o te tau 2021. Nō reira, ahakoa i piki ake te whakamahinga maitai o Haina mā te 2.7% mai i Hānuere ki Ākuhata, e matapaetia ana ka heke te hiahia mō te maitai katoa i te tau 2021 mā te 1.0%. E whakapono ana te World Steel Association, e ai ki te tūnga o te kāwanatanga Haina mō te whakataurite ōhanga me te kaupapa here tiaki taiao, e matapaetia ana kāore te hiahia mō te maitai e tipu pai i te tau 2022, ā, ko te whakakī anō i ngā taonga ka tautoko pea i tana whakamahinga maitai.