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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $28,967,168 | $51,930,190 | $120,647,773 | $179,575,406 | $61,400,599 | $100,544,846 |
| Articles of iron or steel | $51,791,871 | $85,117,575 | $142,673,607 | $154,263,762 | $93,209,832 | $163,195,381 |
| Copper and articles thereof | $1,641,311 | $4,114,383 | $5,558,829 | $7,606,456 | $4,344,983 | $7,889,971 |
| Nickel and articles thereof | $12,162 | $95,824 | $95,561 | $45,695 | $60,273 | $43,816 |
| Aluminum and articles thereof | $8,885,630 | $19,203,378 | $25,675,061 | $34,245,726 | $17,671,054 | $25,390,742 |
| Lead and articles thereof | $23,797 | $91,377 | $136,647 | $94,066 | $112,564 | $103,119 |
| Zinc and articles thereof | $92,214 | $108,695 | $205,366 | $653,589 | $397,240 | $557,179 |
| Tin and articles thereof | $44,614 | $104,461 | $23,817 | $101,283 | $41,063 | $109,757 |
| Other base metals; cermets; articles thereof | $170,562 | $185,733 | $265,850 | $49,546 | $48,961 | $60,684 |
| Tools, implements, cutlery, spoons and forks, of base metal | $5,803,849 | $8,670,504 | $11,938,532 | $13,841,297 | $9,254,948 | $12,711,850 |
| Miscellaneous articles of base metal | $11,460,280 | $14,260,699 | $22,266,795 | $29,219,679 | $20,797,479 | $25,299,852 |
| Total | $108,893,458 | $183,882,819 | $329,487,838 | $419,696,505 | $207,338,996 | $335,907,197 |
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