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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $4,092,072 | $4,387,366 | $10,792,643 | $5,709,737 | $5,519,631 | $3,299,593 | $31,415,903 |
| Articles of iron or steel | $2,592,254 | $11,669,235 | $6,569,566 | $8,649,535 | $24,154,470 | $18,241,638 | $13,287,113 |
| Copper and articles thereof | $351,770 | $529,271 | $1,358,254 | $1,694,081 | $936,608 | $766,595 | $1,683,312 |
| Nickel and articles thereof | $73,241 | | | $2,803 | | | $15,802 |
| Aluminum and articles thereof | $84,717 | $1,006,220 | $161,407 | $427,930 | $245,994 | $618,116 | $80,370 |
| Lead and articles thereof | | $360,930 | $699,425 | $555,293 | | $19,492 | $4,801 |
| Zinc and articles thereof | | $7,046 | | $11,864 | $881 | $66,465 | |
| Tin and articles thereof | $203 | $6,224 | $452 | $2,913 | $10,710 | $4,624 | $5,576 |
| Other base metals; cermets; articles thereof | | | $7,539 | | $963 | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $578,851 | $542,002 | $1,074,918 | $1,272,772 | $1,949,320 | $1,248,915 | $322,027 |
| Miscellaneous articles of base metal | $13,644 | $280,871 | $547,451 | $348,620 | $574,483 | $87,242 | $74,519 |
| Total | $7,786,752 | $18,789,165 | $21,211,655 | $18,675,548 | $33,393,060 | $24,352,680 | $46,889,423 |
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