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Millions of dollars & shares, except per share data | 2012 | 2011 | 2010 | 2009 | | Revenue | $28,503 | $24,829 | $17,973 | $14,675 | | Operating income | 4,159 | 4,737 | 3,009 | 1,994 | | Income from continuing operations attributable to company | 2,577 | 3,005 | 1,795 | 1,154 | | Net income attributable to company | 2,635 | 2,839 | 1,835 | 1,145 | Diluted income per share
from continuing operations attributable to company | 2.78 | 3.26 | 1.97 | 1.28 | | Diluted net income per share attributable to company | 2.84 | 3.08 | 2.01 | 1.27 | | Cash dividends per share | 0.36 | 0.36 | 0.36 | 0.36 | | Diluted weighted average common
shares outstanding | 928 | 922 | 911 | 902 | | Working capital1 | 8,334 | 7,456 | 6,129 | 5,749 | | Long-term debt (including current
maturities) | 4,820 | 4,820 | 3,824 | 4,574 | | Debt to total capitalization2 | 24% | 27% | 27% | 34% | | Capital expenditures | 3,566 | 2,953 | 2,069 | 1,864 | | Depreciation, depletion, and amortization | 1,628 | 1,359 | 1,119 | 931 | | Return on capital employed3 | 15% | 19% | 15% | 11% |
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