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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $18,945,297 | $18,617,334 | $22,979,375 | $28,337,631 | $16,950,536 | $18,954,013 | $17,138,920 |
| Articles of iron or steel | $44,682,973 | $36,177,994 | $43,330,189 | $63,578,586 | $39,666,359 | $39,335,705 | $37,735,417 |
| Copper and articles thereof | $1,971,660 | $1,935,417 | $2,182,118 | $2,836,266 | $1,620,042 | $1,876,658 | $1,817,414 |
| Nickel and articles thereof | $4,576 | $4,889 | $3,353 | $3,126 | $4,572 | $1,360 | $5,478 |
| Aluminum and articles thereof | $15,327,871 | $12,302,344 | $15,225,322 | $16,397,032 | $13,607,613 | $14,634,969 | $12,719,054 |
| Lead and articles thereof | $93,824 | $78,044 | $96,163 | $115,272 | $82,546 | $63,164 | $53,635 |
| Zinc and articles thereof | $7,281 | $27,569 | $17,094 | $62,481 | $153 | $1,259 | $7,585 |
| Tin and articles thereof | $13,730 | $9,612 | $12,332 | $14,873 | $8,438 | $13,983 | $12,931 |
| Other base metals; cermets; articles thereof | $295,411 | $88,723 | $10,132 | $182,034 | $11,422 | $10,761 | $35,445 |
| Tools, implements, cutlery, spoons and forks, of base metal | $7,149,462 | $6,559,221 | $6,998,542 | $8,799,844 | $7,343,721 | $6,685,536 | $6,090,677 |
| Miscellaneous articles of base metal | $7,995,440 | $8,255,851 | $8,119,513 | $10,763,549 | $8,787,870 | $8,116,481 | $7,114,709 |
| Total | $96,487,525 | $84,056,998 | $98,974,133 | $131,090,694 | $88,083,272 | $89,693,889 | $82,731,265 |
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