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| Chapter | 2005 | 2006 | 2007 | 2009 | 2011 |
| Iron and steel | $245,885,528 | $379,701,734 | $826,007,998 | $70,853,457 | $659,980,167 |
| Articles of iron or steel | $89,535,662 | $117,622,056 | $168,271,333 | $123,002,706 | $180,666,202 |
| Copper and articles thereof | $4,909,164 | $16,388,437 | $12,904,343 | $9,099,129 | $20,810,996 |
| Nickel and articles thereof | $37,293 | $19,225 | $117,153 | | $69 |
| Aluminum and articles thereof | $7,608,475 | $12,541,375 | $12,063,110 | $7,054,793 | $11,205,256 |
| Lead and articles thereof | $451,484 | $1,752,267 | $3,744,673 | $3,283,636 | $3,365,084 |
| Zinc and articles thereof | $801,726 | $2,120,520 | $2,187,170 | $570,964 | $612,324 |
| Tin and articles thereof | $16,912 | $1,099 | | $3,969 | $44,125 |
| Other base metals; cermets; articles thereof | $45,174 | $18,248 | $2,499 | $7,172 | $6,556 |
| Tools, implements, cutlery, spoons and forks, of base metal | $139,639 | $363,770 | $448,315 | $444,033 | $926,377 |
| Miscellaneous articles of base metal | $1,722,259 | $1,841,993 | $2,191,390 | $1,544,054 | $1,990,473 |
| Total | $351,153,316 | $532,370,724 | $1,027,937,984 | $215,863,913 | $879,607,629 |
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