This item includes non-repairable spare parts, raw materials, consumables and supplies, purchased merchandise and advance payments made for inventories. They are measured at cost, determined on the basis of average prices, or at production costs. The cost of production includes all costs directly attributable to the production process, including borrowing costs as required under IAS 23, as well as appropriate portions of production-related overheads. Measurement on the balance sheet date is at the lower of cost and realisable value less costs to sell. Average capacity utilisation of 97 per cent is assumed in determining the costs of production. Realisable value less costs to sell is calculated on the basis of the finished product.