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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $11,840,690 | $9,501,649 | $13,518,742 | $11,536,241 | $3,914,358 | $7,988,643 | $19,314,383 |
| Articles of iron or steel | $3,010,828 | $3,092,383 | $4,291,590 | $4,241,123 | $1,580,608 | $5,219,690 | $4,611,951 |
| Copper and articles thereof | $1,699,420 | $2,527,871 | $9,643,668 | $14,533,246 | $1,115,466 | $2,635,081 | $7,410,735 |
| Nickel and articles thereof | | $53,751 | $131,500 | $23,940 | | $4,500 | $131,636 |
| Aluminum and articles thereof | $4,514,290 | $8,526,135 | $11,860,104 | $8,446,787 | $2,780,431 | $4,680,581 | $4,888,547 |
| Lead and articles thereof | $50,703 | $332,087 | $741,509 | $1,377,459 | $1,218,355 | $3,001,733 | $1,764,267 |
| Zinc and articles thereof | | $162 | $57,119 | $62,423 | $48,798 | | |
| Tin and articles thereof | | | | | | $752,485 | |
| Other base metals; cermets; articles thereof | $25,634 | $43,220 | $38,480 | $72,249 | $9,900 | $492 | |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,301,086 | $1,864,630 | $2,061,199 | $4,365,105 | $1,910,593 | $1,616,573 | $2,203,062 |
| Miscellaneous articles of base metal | $345,149 | $341,544 | $404,373 | $807,805 | $1,453,277 | $394,093 | $1,110,684 |
| Total | $22,787,800 | $26,283,432 | $42,748,284 | $45,466,378 | $14,031,786 | $26,293,871 | $41,435,265 |
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