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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $4,375,547 | $5,521,208 | $4,587,989 | $48,664,980 | $8,582,726 | $15,070,409 | $29,119,553 |
| Articles of iron or steel | $5,236,523 | $2,548,581 | $7,418,365 | $10,544,033 | $10,398,346 | $23,904,395 | $17,327,122 |
| Copper and articles thereof | $12,049,936 | $4,200,956 | $8,728,634 | $11,704,697 | $5,194,707 | $148,848,826 | $13,886,121 |
| Nickel and articles thereof | $5,743 | $34,878 | $4,080 | $2,258 | $757 | $7,132 | $850 |
| Aluminum and articles thereof | $2,477,359 | $1,632,802 | $3,109,864 | $9,926,297 | $5,285,694 | $6,489,895 | $9,761,725 |
| Lead and articles thereof | $454,107 | $1,524,880 | $8,149,862 | $12,398,095 | $2,426,430 | $3,678,821 | $118,629 |
| Zinc and articles thereof | $54,302 | $159,204 | $377,412 | $565,918 | $68,166 | $278,450 | $670,205 |
| Tin and articles thereof | | $19,934 | $3,472 | $8,832 | | $155,436 | $8,229 |
| Other base metals; cermets; articles thereof | $10,066 | $3,276 | $573,717 | $12,321 | $108,220 | $37,519 | $1,271 |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,108,705 | $1,850,486 | $8,819,239 | $11,831,443 | $3,318,939 | $3,590,499 | $3,824,771 |
| Miscellaneous articles of base metal | $68,217 | $316,320 | $670,565 | $349,929 | $286,324 | $696,452 | $369,005 |
| Total | $25,840,505 | $17,812,525 | $42,443,199 | $106,008,803 | $35,670,309 | $202,757,834 | $75,087,481 |
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