Schultz again stepped down as CEO in December 2016, assuming the position of executive chairman. From 2008 to 2017, Schultz oversaw nearly $100 billion added to the company's market capitalization. From the 1980s to his retirement, a series of coffee wars increased Starbucks from 11 coffeehouses in Seattle to 28,000 stores in 77 countries. On June 4, 2018, Schultz announced that he would retire from active management of Starbucks, after 37 years, as he was considering amongst other options a campaign for U.S. president. Kevin Johnson, the firm's president and chief operating officer for the previous two years, succeeded Schultz as CEO while Myron Ullman took over as chairman in June 2018.