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Projections of Warren Buffett, Berkshire Hathaway Inc. chairman and chief executive officer, and Charles Munger, vice chairman of Berkshire Hathaway Inc., appear on large screens above the floor of the Berkshire Hathaway Inc. annual shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 2, 2015. More than 40,000 people are expected Saturday at the Berkshire Hathaway annual meeting, which marks Warren Buffett's 50th year running the company. Photographer: Daniel Acker/Bloomberg via Getty Images

Projections of Warren Buffett, Berkshire Hathaway Inc. chairman and chief executive officer, and Charles Munger, vice chairman of Berkshire Hathaway Inc., appear on large screens above the floor of the Berkshire Hathaway Inc. annual shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 2, 2015. More than 40,000 people are expected Saturday at the Berkshire Hathaway annual meeting, which marks Warren Buffett's 50th year running the company. Photographer: Daniel Acker/Bloomberg via Getty Images