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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $788,692,105 | $625,253,841 | $643,871,235 | $816,360,914 | $442,678,934 | $669,609,605 | $689,169,807 |
| Articles of iron or steel | $307,430,389 | $371,887,684 | $463,640,916 | $425,146,860 | $432,685,826 | $522,871,261 | $612,799,327 |
| Copper and articles thereof | $324,854,962 | $439,078,899 | $428,501,444 | $412,647,238 | $293,400,892 | $427,115,236 | $643,381,916 |
| Nickel and articles thereof | $3,200,341 | $3,910,981 | $4,313,083 | $8,363,479 | $4,054,804 | $7,904,513 | $5,637,040 |
| Aluminum and articles thereof | $189,943,205 | $202,362,201 | $216,140,112 | $228,724,707 | $174,615,039 | $226,764,002 | $366,546,670 |
| Lead and articles thereof | $6,838,902 | $9,459,719 | $25,412,524 | $11,124,637 | $25,034,142 | $27,455,685 | $23,736,620 |
| Zinc and articles thereof | $28,487,487 | $53,798,650 | $58,294,116 | $28,990,547 | $20,774,458 | $43,483,633 | $31,175,603 |
| Tin and articles thereof | $6,277,995 | $7,131,002 | $7,667,113 | $8,669,438 | $5,553,312 | $9,262,162 | $23,472,434 |
| Other base metals; cermets; articles thereof | $2,584,466 | $2,689,157 | $1,295,282 | $954,176 | $1,323,727 | $5,780,942 | $6,084,909 |
| Tools, implements, cutlery, spoons and forks, of base metal | $27,957,785 | $31,233,679 | $34,333,157 | $30,734,343 | $25,908,193 | $30,984,050 | $38,573,650 |
| Miscellaneous articles of base metal | $66,206,372 | $89,058,920 | $82,687,039 | $99,494,232 | $77,423,418 | $104,760,636 | $132,824,677 |
| Total | $1,752,474,009 | $1,835,864,733 | $1,966,156,021 | $2,071,210,571 | $1,503,452,745 | $2,075,991,725 | $2,573,402,653 |
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