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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $481,640,500 | $642,927,400 | $844,761,500 | $1,186,926,500 | $580,831,700 | $735,115,900 | $976,338,900 |
| Articles of iron or steel | $426,766,500 | $516,237,600 | $625,545,200 | $809,265,400 | $526,121,600 | $736,188,800 | $911,599,900 |
| Copper and articles thereof | $13,802,900 | $24,961,500 | $33,691,000 | $29,558,600 | $21,496,000 | $24,542,100 | $28,751,600 |
| Nickel and articles thereof | $5,800 | $138,900 | $1,200 | $204,100 | $67,300 | $52,000 | $39,500 |
| Aluminum and articles thereof | $49,245,500 | $78,731,000 | $112,520,700 | $137,575,500 | $84,756,700 | $113,341,300 | $153,271,000 |
| Lead and articles thereof | $219,800 | $433,800 | $912,700 | $1,600,700 | $2,585,900 | $3,866,200 | $4,614,900 |
| Zinc and articles thereof | $100 | | $15,000 | | | $337,400 | $298,500 |
| Tin and articles thereof | $138,500 | $6,600 | $19,700 | $1,100 | $192,000 | $455,900 | $550,000 |
| Other base metals; cermets; articles thereof | $380,400 | $734,700 | $1,029,500 | $1,231,500 | $725,700 | $1,219,400 | $1,881,800 |
| Tools, implements, cutlery, spoons and forks, of base metal | $21,208,100 | $22,195,200 | $27,839,200 | $29,260,500 | $15,798,000 | $23,930,400 | $49,734,100 |
| Miscellaneous articles of base metal | $40,333,500 | $54,735,600 | $65,610,700 | $62,481,400 | $53,994,700 | $56,786,900 | $69,370,200 |
| Total | $1,033,741,600 | $1,341,102,300 | $1,711,946,400 | $2,258,105,300 | $1,286,569,600 | $1,695,836,300 | $2,196,450,400 |
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