17 – Inventories Index141516171819202122232425 (XLSX:) Download Inventories In EUR mn 2022 2021 Crude oil 824 673 Natural gas 936 204 Other raw materials 677 537 Work in progress 231 146 Finished petroleum products 1,112 645 Other finished products1 1,053 945 Inventories 4,834 3,150 1 The balance of other finished products is mainly attributable to the finished products of Borealis Group, i.e. polyolefins and base chemicals. (XLSX:) Download Purchases (net of inventory variation) In EUR mn 2022 2021 Costs of goods and materials 34,811 16,610 Inventory changes1 4,047 3,615 Write-downs to net realizable value and write-offs of inventories 466 41 Reversal of inventories write-downs (25) (9) Purchases (net of inventory variation) 39,298 20,257 1 Mainly related to petrochemical products In 2022 the line ‘write-downs to net realizable value and write-offs of inventories’ was mainly related to gas in storage. 16 – Equity-accounted investments18 – Financial assets