Sergey bought two shares of a stock at $22 each in early January 2018. At the end of a year he earned $2 dividend on each one. By year-end 2018 the price had risen to $22.50. In early January (after the holidays) he bought another share at that price. At year-end 2019 the price was $22.80 and the dividend of $2 a share was again paid out. What was the dollar weighted return on his investment?