pre_text: 6. Inventories Inventories consisted of the following components at June 30, 2019 and 2018: If the FIFO method of inventory had been used instead of the LIFO method, inventories would have been $178.4 million and $210.3 million higher as of June 30, 2019 and 2018, respectively. Current cost of LIFO-valued inventories was $793.0 million at June 30, 2019 and $760.8 million at June 30, 2018. The reductions in LIFO-valued inventories decreased cost of sales by $0.0 million during fiscal year 2019 and $0.6 million during fiscal year 2018 and $0.0 million during fiscal year 2017.
table: June 30,
table: ($ in millions) 2019 2018
table: Raw materials and supplies $169.8 $157.5
table: Work in process 425.7 372.5
table: Finished and purchased products 192.2 159.2
table: Total inventory $787.7 $689.2
question: Analyse this data from a financial earnings document. What was the percentage change in Raw materials and supplies in 2019 from 2018?