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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $705,716,764 | $661,250,264 | $947,531,916 | $809,083,854 | $551,323,384 | $686,351,232 | $853,993,547 |
| Articles of iron or steel | $13,993,235 | $814,023 | $2,385,987 | $3,046,284 | $1,943,225 | $2,075,941 | $2,749,624 |
| Copper and articles thereof | $11,903 | $81,698 | $228,500 | $84,989 | $361,038 | $439,887 | $822,299 |
| Nickel and articles thereof | $148,536,497 | $208,450,138 | $232,786,557 | $520,400,310 | $174,177,808 | $227,266,772 | $270,679,556 |
| Aluminum and articles thereof | $626,423 | $621,967 | $1,046,383 | $1,307,873 | $702,692 | $829,268 | $493,321 |
| Lead and articles thereof | $819 | $963 | $358 | $8,164 | $263 | | $12,319 |
| Zinc and articles thereof | $642 | $79 | $3,717 | $50 | | | |
| Other base metals; cermets; articles thereof | $1,049,347 | $64 | $484,447 | $5,698 | $274,714 | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $219,935 | $246,430 | $262,913 | $438,839 | $11,940,187 | $328,251 | $239,734 |
| Miscellaneous articles of base metal | $36,613 | $75,540 | $34,316 | $78,631 | $11,334,647 | $80,722 | $49,566 |
| Total | $870,192,178 | $871,541,166 | $1,184,765,094 | $1,334,454,692 | $752,057,958 | $917,372,073 | $1,129,039,966 |
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