Use the Simple Exponential smoothing (ES) and Double ES (Holts trend) with coefficients of w=0.7 and =0.6 to forecast the assets in the IRA account for the years 2019 and 2022.

Annual retirement assets (in billions of dollars) for two fund types from 2015 through 2018 are given in the table below.

Year 2015 2016 2017 2018 IRA 4,207 4,784 401(k) 2,768 2,982 3,759 2,275 4,230 2,754