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| Chapter | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $352,802,249 | $575,322,639 | $398,860,698 | $339,971,585 | $194,481,733 |
| Articles of iron or steel | $909,323,042 | $1,634,361,394 | $1,183,336,625 | $1,476,325,144 | $2,271,669,178 |
| Copper and articles thereof | $88,934,951 | $170,225,703 | $60,786,747 | $55,087,078 | $54,006,862 |
| Nickel and articles thereof | $357,125 | $545,325 | $3,891,435 | $964,309 | $231,956 |
| Aluminum and articles thereof | $452,668,648 | $658,295,253 | $381,733,599 | $439,956,047 | $342,349,482 |
| Lead and articles thereof | $1,272,476 | $3,285,229 | $2,226,103 | $4,465,121 | $4,101,589 |
| Zinc and articles thereof | $57,439,382 | $126,635,400 | $55,620,183 | $25,533,904 | $38,972,352 |
| Tin and articles thereof | $395,635 | $1,341,912 | $2,138,016 | $610,494 | $2,148,132 |
| Other base metals; cermets; articles thereof | $106,469 | $590,839 | $1,649,365 | $94,323 | $369,473 |
| Tools, implements, cutlery, spoons and forks, of base metal | $36,568,987 | $66,750,912 | $138,500,375 | $246,784,370 | $255,049,984 |
| Miscellaneous articles of base metal | $47,264,481 | $85,086,867 | $301,858,361 | $298,179,755 | $224,844,809 |
| Total | $1,947,133,445 | $3,322,441,473 | $2,530,601,507 | $2,887,972,130 | $3,388,225,550 |
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