The CEO of Mattel was sacked Monday for failing to turn the tide against plummeting Barbie sales. The board forced out Bryan Stockton, who has served as Mattel’s chairman and chief executive for the past three years, after the company reported a 59 percent drop in earnings. While Barbie is not Mattel’s only toy line, the drop in the beloved American doll’s sales have been the most noticeable and discussed. In 2009, more than a quarter of all dolls purchased in the U.S. were Barbies. By 2013, the doll accounted for only 19.6 percent of all sales.