Swifty Company began operations on January $1,2018,$ and uses the average$-$cost method of pricing inventory. Management is contemplating a change in inventory methods for $2021.$ The following information is available for the years $2018-2020.$

$\backslash$table$[[,$Net Income Computed Using$],[,$Average$-$Cost Method,FIFO Method,LIFO Method$],[2018,$$$16,110,$$$18,880,$$$12,030$