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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $413,194,000 | $550,668,000 | $733,363,000 | $1,064,963,000 | $387,598,000 | $660,734,000 | $948,140,000 |
| Articles of iron or steel | $866,561,000 | $1,093,782,000 | $1,302,671,000 | $1,510,184,000 | $1,048,832,000 | $1,101,437,000 | $1,401,597,000 |
| Copper and articles thereof | $151,462,000 | $205,054,000 | $196,675,000 | $209,447,000 | $137,694,000 | $152,085,000 | $287,925,000 |
| Nickel and articles thereof | $462,000 | $516,000 | $675,000 | $777,000 | $444,000 | $992,000 | $635,000 |
| Aluminum and articles thereof | $880,660,000 | $1,106,815,000 | $1,237,534,000 | $1,095,135,000 | $741,612,000 | $1,048,669,000 | $1,311,582,000 |
| Lead and articles thereof | $1,675,000 | $2,425,000 | $4,661,000 | $3,926,000 | $2,595,000 | $3,031,000 | $4,584,000 |
| Zinc and articles thereof | $4,252,000 | $10,158,000 | $9,632,000 | $4,608,000 | $3,884,000 | $5,261,000 | $4,749,000 |
| Tin and articles thereof | $3,702,000 | $6,288,000 | $8,593,000 | $13,265,000 | $7,314,000 | $7,817,000 | $11,443,000 |
| Other base metals; cermets; articles thereof | $2,535,000 | $1,376,000 | $13,109,000 | $1,205,000 | $342,000 | $21,158,000 | $25,246,000 |
| Tools, implements, cutlery, spoons and forks, of base metal | $61,379,000 | $65,189,000 | $81,776,000 | $89,287,000 | $67,149,000 | $82,285,000 | $95,129,000 |
| Miscellaneous articles of base metal | $337,295,000 | $382,260,000 | $492,846,000 | $524,969,000 | $371,533,000 | $351,410,000 | $418,310,000 |
| Total | $2,723,177,000 | $3,424,531,000 | $4,081,535,000 | $4,517,766,000 | $2,768,997,000 | $3,434,879,000 | $4,509,340,000 |
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