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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $853,842,642 | $1,232,654,815 | $1,824,138,921 | $1,043,789,338 | $852,596,432 | $1,150,375,340 | $1,017,509,372 |
| Articles of iron or steel | $252,366,776 | $260,825,097 | $259,361,413 | $334,278,529 | $202,818,908 | $177,918,564 | $218,552,719 |
| Copper and articles thereof | $102,498,366 | $309,099,400 | $358,143,260 | $295,307,735 | $176,024,851 | $328,902,904 | $355,753,320 |
| Nickel and articles thereof | $14,245,550 | $19,174,590 | $17,851,840 | $15,260,076 | $8,409,509 | $15,215,462 | $113,123 |
| Aluminum and articles thereof | $112,834,621 | $184,323,676 | $224,471,001 | $176,148,995 | $109,410,173 | $132,734,392 | $131,122,983 |
| Lead and articles thereof | $3,242,217 | $2,865,804 | $11,020,332 | $6,223,436 | $3,204,522 | $14,400,266 | $8,259,052 |
| Zinc and articles thereof | $24,658 | $65,964 | $361,884 | $361,511 | $261,223 | $365,781 | $46,804 |
| Tin and articles thereof | $11,221 | $38,860 | $110,868 | $48,364 | $21,809 | $6,109 | $56,196 |
| Other base metals; cermets; articles thereof | $21,268 | $11,016 | $28,533 | $285,328 | $1,593,159 | $175,860 | $188,422 |
| Tools, implements, cutlery, spoons and forks, of base metal | $40,479,689 | $50,770,752 | $53,469,815 | $145,798,383 | $112,841,797 | $55,670,633 | $64,767,074 |
| Miscellaneous articles of base metal | $25,236,493 | $31,943,924 | $48,717,591 | $94,336,059 | $53,585,381 | $35,966,801 | $35,663,628 |
| Total | $1,404,803,501 | $2,091,773,898 | $2,797,675,458 | $2,111,837,754 | $1,520,767,764 | $1,911,732,112 | $1,832,032,693 |
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