On January 1, 2018, Avondale Lumber adopted the dollar-value LIFO inventory method. The inventory value for its one inventory pool on this date was $345,000. An internally generated cost index is used to convert ending inventory to base year. Year-end inventories at year-end costs and cost indexes for its one inventory pool were as follows Year Ended December 31 2018 2019 2020 2021 Inventory Year-End Costs $436,800 449,280 505,760 545,440 Cost Index (Relative to Base Year) 1.04 1.08 1.09 1.12