Nonetheless, Charlie and I will do our best to increase intrinsic value in the future at an average rate of 15%, a result we consider to be at the very peak of possible outcomes. We may have years when we exceed 15%, but we will most certainly have other years when we fall far short of that — including years showing negative returns — and those will bring our average down. In the meantime, you should understand just what an average gain of 15% over the next five years implies: It means we will need to increase net worth by $58 billion. Earning this daunting 15% will require us to come up with
  
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