Compute indexes for the following years: 2019,2020,2021

Presented below is information related to Swifty Corporation for the last 3 years. Base-Year Cost Current-Year Cost Quantities in Ending Item Inventories Unit Cost Amount Unit Cost Amount December 31, 2019 A 9,300 $2.00 $18,600 $2.20 $20,460 B 6,300 3.00 18,900 3.55 22,365 O 4,300 5.00 21,500 5.40 23,220 Totals $59,000 $66,045 December 31, 2020 A 9,300 $2.00 $18,600 $2.60 $24,180 B 7,100 3.00 21,300 3.75 26,625 O 6,300 5.00 31,500 6.40 40,320 Totals $71,400 $91,125 December 31, 2021 A 8,300 $2.00 $16,600 $2.70 $22,410 B 8,300 3.00 24,900 4.00 33,200 C 6,300 5.00 31,500 6.20 39,060 Totals $73,000 $94,670