Nico bought 100 shares of a company's stock for $22.00 per share on January 1, 2018. He received a dividend of $2.00 per share at the end of 2018 and $3.00 per share at the end of 2019. At the end of 2020, Nico collected a dividend of $4.00 per share and sold his stock for $18.00 per share. What was Nico's realized holding period return?