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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $501,199,000 | $561,193,000 | $789,626,000 | $897,716,000 | $505,341,000 | $702,283,000 | $943,249,000 |
| Articles of iron or steel | $573,649,000 | $518,085,000 | $670,385,000 | $725,364,000 | $514,152,000 | $637,904,000 | $936,395,000 |
| Copper and articles thereof | $188,914,000 | $311,321,000 | $330,481,000 | $338,921,000 | $169,666,000 | $235,961,000 | $298,693,000 |
| Nickel and articles thereof | $43,370,000 | $52,440,000 | $67,621,000 | $68,318,000 | $28,318,000 | $29,235,000 | $37,838,000 |
| Aluminum and articles thereof | $294,567,000 | $388,821,000 | $490,766,000 | $444,252,000 | $279,362,000 | $377,501,000 | $455,794,000 |
| Lead and articles thereof | $9,767,000 | $10,017,000 | $25,818,000 | $30,130,000 | $20,439,000 | $26,972,000 | $21,407,000 |
| Zinc and articles thereof | $20,703,000 | $38,094,000 | $48,495,000 | $27,809,000 | $14,446,000 | $24,734,000 | $24,201,000 |
| Tin and articles thereof | $2,899,000 | $3,930,000 | $5,460,000 | $5,810,000 | $3,672,000 | $5,533,000 | $6,737,000 |
| Other base metals; cermets; articles thereof | $58,423,000 | $108,162,000 | $136,374,000 | $143,571,000 | $82,490,000 | $107,908,000 | $133,078,000 |
| Tools, implements, cutlery, spoons and forks, of base metal | $123,495,000 | $146,789,000 | $180,232,000 | $187,706,000 | $134,445,000 | $176,604,000 | $207,703,000 |
| Miscellaneous articles of base metal | $118,663,000 | $134,790,000 | $167,559,000 | $196,397,000 | $164,515,000 | $191,859,000 | $221,942,000 |
| Total | $1,935,649,000 | $2,273,642,000 | $2,912,817,000 | $3,065,994,000 | $1,916,846,000 | $2,516,494,000 | $3,287,037,000 |
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