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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $442,029,142 | $817,712,529 | $1,292,556,825 | $704,077,391 | $133,964,096 | $157,028,796 | $568,383,132 |
| Articles of iron or steel | $15,089,380 | $17,885,471 | $32,267,990 | $22,111,364 | $19,299,185 | $23,004,705 | $27,003,777 |
| Copper and articles thereof | $1,524,102 | $1,607,107 | $1,851,839 | $19,046,839 | $64,063,152 | $75,824,450 | $125,365,911 |
| Nickel and articles thereof | $129,590 | $3,074 | $33,785 | $1,250 | $32,098 | $267,931 | $953,541 |
| Aluminum and articles thereof | $5,643,273 | $7,803,245 | $12,911,604 | $39,617,357 | $11,631,497 | $20,182,006 | $23,606,515 |
| Lead and articles thereof | $1,191,380 | $2,208,719 | $2,735,547 | $1,103,286 | $285,498 | $632,677 | $235,539 |
| Zinc and articles thereof | $10,289,364 | $8,683,243 | $4,417,779 | $7,819,311 | $5,548,237 | $12,642,851 | $5,000,562 |
| Tin and articles thereof | $129,274 | $404,623 | $121,564 | $380,610 | $80,102 | $452,348 | $275,716 |
| Other base metals; cermets; articles thereof | $996 | $61,667 | | $12 | | $434,546 | $587,649 |
| Tools, implements, cutlery, spoons and forks, of base metal | $376,807 | $933,642 | $1,281,610 | $1,543,394 | $1,574,144 | $2,565,141 | $1,950,411 |
| Miscellaneous articles of base metal | $1,595,178 | $1,671,478 | $2,982,065 | $3,965,384 | $3,053,780 | $2,441,197 | $4,014,671 |
| Total | $477,998,486 | $858,974,798 | $1,351,160,608 | $799,666,198 | $239,531,789 | $295,476,648 | $757,377,424 |
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