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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $137,870,675 | $187,613,325 | $236,942,614 | $284,131,654 | $144,699,171 | $228,341,613 | $341,761,183 |
| Articles of iron or steel | $216,247,052 | $262,441,552 | $309,804,563 | $339,691,566 | $219,683,801 | $281,541,581 | $378,946,197 |
| Copper and articles thereof | $51,632,273 | $74,297,964 | $76,970,572 | $86,350,799 | $51,303,463 | $75,725,135 | $74,774,150 |
| Nickel and articles thereof | $8,540,005 | $10,501,923 | $16,524,059 | $11,557,736 | $8,308,808 | $11,427,214 | $15,029,922 |
| Aluminum and articles thereof | $100,303,788 | $115,591,083 | $155,234,233 | $157,459,390 | $87,366,858 | $89,296,897 | $111,813,535 |
| Lead and articles thereof | $34,412,816 | $42,313,657 | $97,920,989 | $74,287,662 | $52,087,602 | $57,221,282 | $70,857,886 |
| Zinc and articles thereof | $663,152 | $967,698 | $2,128,857 | $1,599,706 | $1,445,799 | $1,371,937 | $1,248,993 |
| Tin and articles thereof | $1,720,515 | $933,881 | $2,695,386 | $1,717,849 | $686,404 | $2,711,397 | $1,145,227 |
| Other base metals; cermets; articles thereof | $4,404,719 | $780,267 | $2,526,475 | $1,538,351 | $1,572,937 | $3,717,139 | $2,183,254 |
| Tools, implements, cutlery, spoons and forks, of base metal | $102,893,705 | $114,440,960 | $150,746,617 | $180,127,285 | $105,735,719 | $122,715,302 | $252,512,570 |
| Miscellaneous articles of base metal | $206,122,455 | $214,962,939 | $240,097,617 | $272,082,264 | $224,086,198 | $237,831,491 | $251,823,496 |
| Total | $864,811,155 | $1,024,845,249 | $1,291,591,982 | $1,410,544,262 | $896,976,760 | $1,111,900,988 | $1,502,096,413 |
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