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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $144,225,781 | $106,761,159 | $249,161,066 | $267,585,912 | $114,264,788 | $171,818,954 | $246,472,305 |
| Articles of iron or steel | $118,748,759 | $128,873,554 | $154,205,530 | $197,509,077 | $143,981,389 | $169,453,122 | $209,885,336 |
| Copper and articles thereof | $5,967,045 | $6,287,057 | $9,892,279 | $10,353,638 | $4,833,918 | $7,410,335 | $12,638,214 |
| Nickel and articles thereof | $189,614 | $202,220 | $355,053 | $298,981 | $21,974 | $178,654 | $38,891 |
| Aluminum and articles thereof | $83,348,632 | $88,442,843 | $117,498,485 | $115,719,647 | $90,286,334 | $105,758,091 | $129,523,151 |
| Lead and articles thereof | $208,445 | $300,156 | $243,689 | $315,849 | $344,561 | $301,693 | $418,862 |
| Zinc and articles thereof | $26,861,901 | $37,373,263 | $50,463,781 | $35,676,841 | $20,685,467 | $29,982,130 | $34,741,755 |
| Tin and articles thereof | $155,872 | $177,395 | $281,430 | $344,963 | $185,047 | $234,850 | $360,667 |
| Other base metals; cermets; articles thereof | $111,718 | $155,362 | $119,285 | $126,426 | $102,686 | $99,918 | $95,608 |
| Tools, implements, cutlery, spoons and forks, of base metal | $42,172,662 | $43,898,140 | $52,460,902 | $49,668,697 | $40,386,595 | $47,497,783 | $55,956,123 |
| Miscellaneous articles of base metal | $63,047,883 | $56,159,223 | $74,735,489 | $78,007,661 | $67,216,533 | $79,769,609 | $89,675,199 |
| Total | $485,038,312 | $468,630,372 | $709,416,989 | $755,607,692 | $482,309,292 | $612,505,139 | $779,806,111 |
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