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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $312,840,972 | $424,860,184 | $584,397,620 | $780,963,971 | $367,663,118 | $522,417,396 | $943,252,374 |
| Articles of iron or steel | $441,853,001 | $621,571,146 | $580,081,141 | $852,085,618 | $622,014,638 | $429,178,445 | $679,588,110 |
| Copper and articles thereof | $335,081,699 | $609,292,806 | $737,556,722 | $800,809,393 | $353,054,598 | $604,566,162 | $793,523,587 |
| Nickel and articles thereof | $88,223 | $301,691 | $505,062 | $374,542 | $36,337 | $170,265 | $225,851 |
| Aluminum and articles thereof | $899,780,802 | $1,087,539,643 | $1,261,944,582 | $1,295,341,031 | $913,534,126 | $1,191,451,519 | $1,712,228,648 |
| Lead and articles thereof | $8,113,868 | $9,111,842 | $34,190,267 | $20,258,758 | $8,292,292 | $17,990,964 | $19,648,442 |
| Zinc and articles thereof | $6,936,179 | $17,412,714 | $162,222,852 | $35,375,809 | $30,784,404 | $34,715,344 | $5,671,565 |
| Tin and articles thereof | $379,395 | $32,284 | $476,522 | $257,951 | $16,363 | $147,530 | $314,036 |
| Other base metals; cermets; articles thereof | $1,518,839 | $1,003,407 | $532,415 | $311,073 | $442,652 | $744,653 | $750,631 |
| Tools, implements, cutlery, spoons and forks, of base metal | $25,516,121 | $22,829,949 | $30,095,662 | $27,338,035 | $21,626,957 | $22,205,757 | $21,221,319 |
| Miscellaneous articles of base metal | $69,983,059 | $75,409,640 | $100,757,036 | $109,902,535 | $80,115,105 | $82,187,904 | $94,703,780 |
| Total | $2,102,092,158 | $2,869,365,306 | $3,492,759,881 | $3,923,018,716 | $2,397,580,590 | $2,905,775,939 | $4,271,128,343 |
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