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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $12,298,443 | $16,010,153 | $31,820,929 | $45,016,802 | $53,511,051 | $44,122,628 | $68,186,885 |
| Articles of iron or steel | $18,430,221 | $28,749,160 | $40,106,752 | $65,394,311 | $69,459,213 | $62,964,204 | $98,370,421 |
| Copper and articles thereof | $3,625,806 | $5,514,132 | $13,742,344 | $19,283,285 | $2,363,039 | $4,948,135 | $8,195,916 |
| Nickel and articles thereof | $157,740 | $63,435 | $222,718 | $52,961 | $83,357 | $71,495 | $125,281 |
| Aluminum and articles thereof | $4,303,206 | $7,546,709 | $13,030,509 | $11,890,890 | $7,238,937 | $9,369,772 | $6,643,727 |
| Lead and articles thereof | $378,831 | $271,074 | $650,093 | $1,054,759 | $354,600 | $680,230 | $1,161,619 |
| Zinc and articles thereof | $14,366 | $97,771 | $212,744 | $171,966 | $34,449 | $17,888 | $278,837 |
| Tin and articles thereof | $117,593 | $135,459 | $21,853 | $245,226 | $9,649 | $10,177 | $792,064 |
| Other base metals; cermets; articles thereof | $36,739 | $48,027 | $584,578 | $404,989 | $29,392 | $154,300 | $12,801 |
| Tools, implements, cutlery, spoons and forks, of base metal | $4,155,096 | $13,411,973 | $24,451,138 | $22,865,691 | $7,091,231 | $14,263,690 | $19,427,237 |
| Miscellaneous articles of base metal | $4,939,739 | $8,721,360 | $12,001,689 | $14,213,297 | $14,006,191 | $9,573,799 | $22,468,140 |
| Total | $48,457,780 | $80,569,253 | $136,845,347 | $180,594,177 | $154,181,109 | $146,176,318 | $225,662,928 |
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