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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $13,816,035 | $21,643,624 | $29,540,619 | $41,177,143 | $37,011,477 | $42,391,345 | $49,897,447 |
| Articles of iron or steel | $32,631,821 | $54,461,156 | $144,084,935 | $120,989,135 | $127,959,947 | $98,390,511 | $72,957,615 |
| Copper and articles thereof | $1,983,903 | $2,011,954 | $4,656,896 | $9,278,742 | $2,477,038 | $3,531,566 | $4,224,464 |
| Nickel and articles thereof | $54,944 | $16,046 | $34,557 | $72,227 | $48,447 | $67,813 | $58,556 |
| Aluminum and articles thereof | $8,829,289 | $29,458,790 | $56,952,086 | $74,696,323 | $114,925,897 | $110,004,165 | $93,520,171 |
| Lead and articles thereof | $5,250 | $42,225 | $21,896 | $1,866,983 | $855,468 | $1,186,554 | $1,995,017 |
| Zinc and articles thereof | $2,512 | $502 | | $7,252 | $47,490 | $21,323 | $91,345 |
| Tin and articles thereof | $72,339 | $5,388 | $10,349 | $50,911 | $96,701 | $82,157 | $123,936 |
| Other base metals; cermets; articles thereof | $260,643 | $218,305 | $222,767 | $80,300 | $21,744 | $89,761 | $120,826 |
| Tools, implements, cutlery, spoons and forks, of base metal | $2,380,266 | $3,680,206 | $5,247,257 | $9,320,567 | $8,146,078 | $8,174,945 | $8,569,634 |
| Miscellaneous articles of base metal | $5,656,596 | $7,648,084 | $9,594,353 | $17,175,768 | $13,922,826 | $15,551,830 | $16,544,532 |
| Total | $65,693,598 | $119,186,280 | $250,365,715 | $274,715,351 | $305,513,113 | $279,491,970 | $248,103,543 |
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