| http://www.w3.org/ns/prov#value | - he is up 61 percent from last year's $4.994 billion, or $3,224 per share, and better than analysts expected.Revenue rose 4.4 percent to $112.5 billion in 2009.But Buffett also acknowledged mistakes in the past year, including letting debt and losses at fractional jet ownership unit NetJets grow for too long, and suggesting a credit card through th
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