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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $4,648,512 | $6,652,169 | $11,455,914 | $5,762,649 | $1,700,505 | $15,666,529 | $34,850,301 |
| Articles of iron or steel | $4,513,260 | $7,901,984 | $15,195,285 | $19,359,647 | $13,553,423 | $15,257,630 | $25,093,946 |
| Copper and articles thereof | $2,431,484 | $7,381,428 | $13,829,011 | $12,734,395 | $3,772,355 | $15,255,752 | $32,849,956 |
| Nickel and articles thereof | | $56,719 | $80,575 | $1,912 | $2,149 | | |
| Aluminum and articles thereof | $4,951,464 | $4,217,297 | $6,989,341 | $7,910,874 | $2,952,200 | $4,342,311 | $7,583,375 |
| Lead and articles thereof | $6,000 | $3,190 | $416 | $6 | $1,658 | | |
| Zinc and articles thereof | | $33,980 | $603,065 | $90,124 | $30,220 | $22,981 | $14,821 |
| Tin and articles thereof | | $182 | $16 | $328 | | | |
| Other base metals; cermets; articles thereof | | $120,896 | $184,281 | $559,032 | $119,235 | $67,637 | $152,082 |
| Tools, implements, cutlery, spoons and forks, of base metal | $7,111,103 | $4,799,039 | $5,220,110 | $2,668,947 | $2,204,546 | $1,448,347 | $436,356 |
| Miscellaneous articles of base metal | $670,630 | $2,107,682 | $4,901,677 | $8,508,902 | $4,248,360 | $4,414,108 | $7,708,874 |
| Total | $24,332,453 | $33,274,566 | $58,459,691 | $57,596,816 | $28,584,651 | $56,475,295 | $108,689,711 |
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