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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $296,712,681 | $354,979,352 | $562,192,532 | $786,856,807 | $364,346,373 | $493,233,501 |
| Articles of iron or steel | $229,364,435 | $280,045,913 | $479,019,993 | $584,118,211 | $522,252,502 | $423,255,461 |
| Copper and articles thereof | $142,552,437 | $229,758,952 | $316,228,688 | $369,702,931 | $269,036,881 | $389,675,273 |
| Nickel and articles thereof | $982,246 | $966,289 | $1,844,912 | $2,018,131 | $1,273,014 | $1,193,864 |
| Aluminum and articles thereof | $65,957,427 | $85,570,562 | $106,143,177 | $135,108,706 | $126,227,202 | $153,955,504 |
| Lead and articles thereof | $7,600,465 | $8,312,064 | $14,524,087 | $19,209,099 | $13,316,033 | $22,462,524 |
| Zinc and articles thereof | $6,900,598 | $26,986,039 | $35,561,907 | $22,414,878 | $12,238,462 | $20,375,594 |
| Tin and articles thereof | $2,625,568 | $4,310,799 | $5,429,536 | $7,056,963 | $4,920,436 | $8,967,020 |
| Other base metals; cermets; articles thereof | $328,542 | $471,347 | $796,114 | $891,569 | $1,546,655 | $2,017,321 |
| Tools, implements, cutlery, spoons and forks, of base metal | $37,102,262 | $40,876,593 | $56,071,462 | $62,737,209 | $62,130,379 | $68,129,187 |
| Miscellaneous articles of base metal | $71,937,246 | $75,138,753 | $92,364,089 | $112,540,011 | $110,232,786 | $113,935,034 |
| Total | $862,063,907 | $1,107,416,663 | $1,670,176,497 | $2,102,654,515 | $1,487,520,723 | $1,697,200,283 |
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