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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $104,499,392 | $92,966,221 | $141,964,578 | $153,604,613 | $154,307,823 | $181,006,375 | $225,404,980 |
| Articles of iron or steel | $2,037,245 | $2,524,067 | $3,692,885 | $11,980,380 | $3,980,813 | $3,203,909 | $4,428,567 |
| Copper and articles thereof | $1,075,071 | $262,629 | $1,217,912 | $651,184 | $645,252 | $1,142,486 | $932,648 |
| Nickel and articles thereof | | | $27,738 | | | | |
| Aluminum and articles thereof | $574,683,588 | $816,806,578 | $1,263,639,766 | $2,104,829,786 | $1,407,866,429 | $1,910,464,947 | $2,122,778,095 |
| Lead and articles thereof | $20,893 | $631 | $4,310 | $63,489 | $1,196 | $684 | $882 |
| Zinc and articles thereof | $66,327 | $152,275 | $257,179 | $14,642 | | $93,673 | $15,914 |
| Tin and articles thereof | $2,626 | $830 | $6,579 | $3,603 | $701 | $156 | $21,923 |
| Other base metals; cermets; articles thereof | | $1,516 | $50,039 | $1,143 | $100 | $1,083 | $883,962 |
| Tools, implements, cutlery, spoons and forks, of base metal | $308,371 | $369,028 | $613,922 | $317,401 | $345,997 | $315,285 | $493,838 |
| Miscellaneous articles of base metal | $17,476 | $321,550 | $87,220 | $56,009 | $43,386 | $187,008 | $55,820 |
| Total | $682,710,989 | $913,405,325 | $1,411,562,128 | $2,271,522,250 | $1,567,191,697 | $2,096,415,606 | $2,355,016,629 |
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