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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $322,327,577 | $406,494,467 | $461,665,172 | $686,121,504 | $210,897,340 | $414,206,557 | $558,720,961 |
| Articles of iron or steel | $202,705,090 | $230,919,109 | $365,584,515 | $442,310,957 | $335,984,279 | $322,863,231 | $426,174,969 |
| Copper and articles thereof | $24,672,925 | $49,077,977 | $52,694,310 | $54,500,841 | $32,504,904 | $60,344,365 | $52,763,230 |
| Nickel and articles thereof | $1,991,142 | $9,234,012 | $19,309,310 | $10,646,189 | $861,928 | $76,750 | $4,606,597 |
| Aluminum and articles thereof | $32,298,154 | $42,523,873 | $57,684,390 | $135,843,043 | $52,438,752 | $82,755,541 | $93,261,310 |
| Lead and articles thereof | $8,440,217 | $11,088,641 | $27,759,316 | $25,423,261 | $15,556,470 | $24,857,704 | $30,285,081 |
| Zinc and articles thereof | $750,777 | $17,613,766 | $1,934,507 | $1,809,180 | $1,941,517 | $860,536 | $1,570,409 |
| Tin and articles thereof | $72,518 | $97,254 | $227,264 | $1,254,753 | $353,821 | $323,880 | $263,630 |
| Other base metals; cermets; articles thereof | $10,101,112 | $14,830,783 | $17,319,099 | $20,239,656 | $9,812,723 | $17,941,689 | $33,554,394 |
| Tools, implements, cutlery, spoons and forks, of base metal | $15,076,228 | $14,137,730 | $25,242,873 | $28,333,686 | $20,452,362 | $30,100,261 | $38,468,780 |
| Miscellaneous articles of base metal | $13,407,087 | $13,080,560 | $17,067,031 | $15,931,907 | $14,537,959 | $24,107,510 | $37,346,380 |
| Total | $631,842,827 | $809,098,172 | $1,046,487,787 | $1,422,414,977 | $695,342,055 | $978,438,024 | $1,277,015,741 |
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