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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $473,846,227 | $649,883,279 | $1,008,861,451 | $750,204,738 | $497,904,555 | $708,637,116 | $944,004,405 |
| Articles of iron or steel | $674,982,384 | $803,901,925 | $1,015,044,432 | $1,299,322,156 | $877,570,789 | $1,033,519,399 | $1,383,946,748 |
| Copper and articles thereof | $146,336,202 | $256,524,152 | $294,540,581 | $290,515,455 | $192,004,738 | $388,450,800 | $450,591,506 |
| Nickel and articles thereof | $125,035,060 | $526,765,374 | $575,857,930 | $460,488,011 | $144,699,754 | $69,504,659 | $38,540,043 |
| Aluminum and articles thereof | $136,055,509 | $172,536,709 | $199,150,763 | $219,257,761 | $153,804,894 | $342,210,230 | $463,312,748 |
| Lead and articles thereof | $21,757,653 | $23,953,816 | $54,497,368 | $51,908,051 | $34,288,162 | $47,194,001 | $44,655,428 |
| Zinc and articles thereof | $8,289,113 | $35,969,439 | $29,658,263 | $19,391,915 | $4,965,015 | $23,458,002 | $39,867,581 |
| Tin and articles thereof | $21,215,833 | $20,188,015 | $29,303,555 | $39,124,487 | $34,003,567 | $53,116,694 | $48,538,800 |
| Other base metals; cermets; articles thereof | $47,304,034 | $40,918,235 | $49,931,678 | $90,552,985 | $28,809,156 | $47,029,688 | $53,696,592 |
| Tools, implements, cutlery, spoons and forks, of base metal | $246,614,251 | $288,344,826 | $333,549,203 | $322,489,093 | $251,989,894 | $314,506,747 | $396,525,088 |
| Miscellaneous articles of base metal | $169,772,025 | $209,297,031 | $259,626,267 | $278,190,858 | $218,542,420 | $285,682,326 | $306,644,207 |
| Total | $2,071,208,291 | $3,028,282,801 | $3,850,021,491 | $3,821,445,510 | $2,438,582,944 | $3,313,309,662 | $4,170,323,146 |
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