Wahi a nā helu helu, ua hana ʻo Kina ma kahi o 5.52 miliona tone o nā paipu kila i hoʻopili ʻia i ʻAukake, e ulu ana ma ka 4.2% ke hoʻohālikelike ʻia me ka mahina like o ka makahiki ma mua.

I nā mahina ʻewalu mua o kēia makahiki, ua hōʻea ka hana ʻana o nā paipu kila i hoʻopaʻa ʻia a Kina ma kahi o 37.93 miliona tons, he piʻi makahiki-ma-makahiki o 0.9%.