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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $22,960,993 | $33,759,428 | $50,302,153 | $80,696,282 | $54,748,816 | $67,160,755 | $95,057,897 |
| Articles of iron or steel | $4,953,197 | $7,674,758 | $11,025,252 | $13,068,259 | $11,000,618 | $14,291,529 | $12,378,471 |
| Copper and articles thereof | $2,844,843 | $6,690,391 | $10,966,113 | $13,987,830 | $8,086,869 | $8,130,712 | $11,012,390 |
| Nickel and articles thereof | | | $31,440 | | $50,957 | | |
| Aluminum and articles thereof | $2,545,075 | $3,306,490 | $6,153,187 | $9,003,583 | $4,365,595 | $3,891,550 | $4,204,600 |
| Lead and articles thereof | $5,309 | $49,835 | $112,154 | $431,641 | | $1,004,061 | $5,042,761 |
| Zinc and articles thereof | $49,973 | $38,507 | $28,276 | $5,331 | $33,824 | $33,015 | $97,270 |
| Tin and articles thereof | $4,423 | $7,053 | $6,403 | $1,041 | $3,635 | | $20,817 |
| Other base metals; cermets; articles thereof | $863 | $999 | $2,265 | | | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $155,507 | $344,809 | $311,680 | $417,293 | $773,727 | $879,898 | $799,757 |
| Miscellaneous articles of base metal | $261,225 | $179,378 | $688,251 | $191,202 | $191,492 | $281,327 | $352,729 |
| Total | $33,781,408 | $52,051,648 | $79,627,174 | $117,802,462 | $79,255,533 | $95,672,847 | $128,966,692 |
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