Daim ntawv tshaj tawm kuj tau hais tias qhov nrawm ntawm kev tsim kho vaj tse yog ceev tshaj plaws hauv nroog tsheb ciav hlau. Qhov ntev ntawm metro kab nyob rau hauv kev tsim kho lossis slated rau kev tsim kho nyob rau hauv tsib xyoos tom ntej yog ob npaug ntawm qhov ntev ntawm cov uas tau tsim nyob rau hauv ib lub sij hawm tsib xyoos ntawm 1970 thiab 2015.