The monthly sales for Yazici Batteries, Inc., were as follows:

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec
Sales	19	21	15	14	13	16	16	18	22	20	23	24

Using exponential smoothing with alpha =0.35 and a September forecast of 20.00 the forecast for the next period (Jan) =____

sales (round your response to two decimal places)