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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $277,313,471 | $338,068,059 | $404,317,159 | $590,928,826 | $421,587,484 | $314,086,329 | $368,463,642 |
| Articles of iron or steel | $215,109,037 | $165,070,512 | $199,612,820 | $324,757,127 | $280,578,815 | $401,855,492 | $306,822,385 |
| Copper and articles thereof | $59,865,724 | $98,040,217 | $157,755,662 | $223,383,351 | $157,018,844 | $175,658,218 | $234,718,192 |
| Nickel and articles thereof | $171,181 | $191,496 | $118,371 | $504,850 | $305,374 | $1,119,678 | $1,038,583 |
| Aluminum and articles thereof | $107,773,703 | $160,504,389 | $172,591,387 | $213,986,758 | $168,200,969 | $165,102,525 | $198,884,640 |
| Lead and articles thereof | $3,248,815 | $2,346,393 | $4,477,788 | $3,397,816 | $771,666 | $568,788 | $459,999 |
| Zinc and articles thereof | $3,397,556 | $3,689,883 | $6,880,465 | $4,315,563 | $3,875,895 | $3,417,689 | $4,789,872 |
| Tin and articles thereof | $32,597 | $56,418 | $185,981 | $89,340 | $152,516 | $172,054 | $93,274 |
| Other base metals; cermets; articles thereof | $92,165 | $110,584 | $93,927 | $94,786 | $49,879 | $59,773 | $76,313 |
| Tools, implements, cutlery, spoons and forks, of base metal | $15,643,674 | $18,499,295 | $32,494,813 | $24,518,856 | $23,062,921 | $25,628,768 | $23,669,245 |
| Miscellaneous articles of base metal | $21,934,872 | $26,756,985 | $31,827,320 | $72,339,588 | $77,042,700 | $78,556,936 | $82,902,104 |
| Total | $704,582,795 | $813,334,231 | $1,010,355,693 | $1,458,316,861 | $1,132,647,063 | $1,166,226,250 | $1,221,918,249 |
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