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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $14,689,311 | $23,078,536 | $22,125,083 | $34,994,889 | $14,319,293 | $30,231,710 | $44,151,125 |
| Articles of iron or steel | $98,406,353 | $74,266,978 | $90,697,756 | $117,448,291 | $126,866,399 | $146,699,454 | $198,276,688 |
| Copper and articles thereof | $14,593,251 | $34,070,903 | $46,076,652 | $51,407,317 | $56,922,542 | $88,892,178 | $125,862,631 |
| Nickel and articles thereof | $36,177 | $71,940 | $3,682 | $174,772 | $57,645 | $402,553 | $4,237 |
| Aluminum and articles thereof | $5,847,661 | $5,459,539 | $3,060,039 | $4,327,702 | $3,225,946 | $4,311,733 | $3,974,543 |
| Lead and articles thereof | $2,062,743 | $5,283,994 | $25,102,041 | $2,949,681 | $7,045,469 | $13,678,692 | $17,305,673 |
| Zinc and articles thereof | $263,245 | $804,848 | $831,844 | $207,297 | $113,143 | $468,437 | $1,051,416 |
| Tin and articles thereof | $9,289 | $223,273 | $252,822 | $84,157 | $35,070 | $43,639 | $156,762 |
| Other base metals; cermets; articles thereof | $71,092 | $77,486 | $202,526 | $60,511 | $53,039 | $268,228 | $31,382 |
| Tools, implements, cutlery, spoons and forks, of base metal | $45,624,821 | $41,408,192 | $62,920,733 | $60,617,509 | $61,026,083 | $89,733,913 | $94,999,161 |
| Miscellaneous articles of base metal | $2,307,223 | $1,320,759 | $2,133,506 | $2,605,818 | $915,100 | $1,074,501 | $1,606,714 |
| Total | $183,911,166 | $186,066,448 | $253,406,684 | $274,877,944 | $270,579,729 | $375,805,038 | $487,420,332 |
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