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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $12,657,014 | $18,470,025 | $21,859,738 | $43,694,038 | $31,301,154 | $55,711,816 | $70,909,675 |
| Articles of iron or steel | $40,389,188 | $42,749,991 | $56,998,293 | $97,295,998 | $74,112,749 | $96,549,990 | $129,022,410 |
| Copper and articles thereof | $5,531,015 | $9,852,530 | $11,936,595 | $18,690,956 | $10,619,845 | $18,869,135 | $30,103,626 |
| Nickel and articles thereof | $164,579 | $45,514 | $24,954 | $156,118 | $81,854 | $58,834 | $178,112 |
| Aluminum and articles thereof | $17,817,969 | $22,107,211 | $20,943,620 | $30,534,727 | $33,072,701 | $43,313,191 | $44,710,699 |
| Lead and articles thereof | $198,544 | $151,332 | $151,798 | $238,155 | $202,768 | $282,604 | $347,478 |
| Zinc and articles thereof | $208,587 | $452,687 | $827,517 | $740,879 | $453,875 | $593,490 | $951,697 |
| Tin and articles thereof | $53,221 | $90,892 | $186,443 | $241,154 | $158,304 | $222,074 | $386,135 |
| Other base metals; cermets; articles thereof | $3,150 | $12,655 | $96,356 | $109,922 | $102,177 | $111,262 | $19,247 |
| Tools, implements, cutlery, spoons and forks, of base metal | $13,916,380 | $17,682,174 | $22,351,112 | $31,961,607 | $24,292,487 | $40,558,905 | $51,636,886 |
| Miscellaneous articles of base metal | $9,770,401 | $12,167,376 | $15,532,097 | $24,108,581 | $18,977,456 | $26,498,198 | $33,920,604 |
| Total | $100,710,048 | $123,782,387 | $150,908,523 | $247,772,135 | $193,375,370 | $282,769,499 | $362,186,569 |
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