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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $160,890,523 | $187,761,214 | $193,230,566 | $237,222,844 | $90,908,794 | $124,223,433 |
| Articles of iron or steel | $33,521,407 | $41,530,696 | $95,163,346 | $90,502,939 | $87,043,432 | $61,007,658 |
| Copper and articles thereof | $67,179,415 | $112,322,608 | $136,681,023 | $137,356,669 | $112,483,331 | $230,366,263 |
| Nickel and articles thereof | $151,549 | $435,133 | $48,295 | $54,448 | $84,742 | $88,009 |
| Aluminum and articles thereof | $32,846,288 | $49,437,679 | $55,981,714 | $56,155,873 | $37,508,462 | $62,907,642 |
| Lead and articles thereof | $52,375,933 | $53,274,133 | $106,586,630 | $87,228,987 | $70,286,568 | $87,762,730 |
| Zinc and articles thereof | $1,567,491 | $3,423,141 | $4,485,374 | $2,056,435 | $1,421,046 | $2,867,034 |
| Tin and articles thereof | $20,901 | $3,295 | $347,733 | $281,466 | $127,467 | $861 |
| Other base metals; cermets; articles thereof | $392,032 | $371,811 | $936,953 | $690,641 | $246,091 | $171,716 |
| Tools, implements, cutlery, spoons and forks, of base metal | $3,332,746 | $1,271,772 | $2,587,286 | $1,488,883 | $2,982,722 | $8,303,548 |
| Miscellaneous articles of base metal | $12,320,961 | $8,451,158 | $5,826,045 | $6,127,714 | $7,958,014 | $6,235,399 |
| Total | $364,599,246 | $458,282,640 | $601,874,965 | $619,166,899 | $411,050,669 | $583,934,293 |
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