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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $29,465,118 | $42,788,557 | $71,680,750 | $87,848,946 | $34,734,092 | $52,860,869 | $70,856,233 |
| Articles of iron or steel | $54,869,770 | $83,151,392 | $111,936,441 | $139,447,762 | $73,023,637 | $92,765,448 | $117,808,218 |
| Copper and articles thereof | $1,907,362 | $3,006,521 | $5,130,446 | $5,839,038 | $2,574,409 | $8,826,318 | $17,089,725 |
| Nickel and articles thereof | $85,200 | $70,604 | $143,917 | $239,713 | $28,897 | $64,623 | $155,421 |
| Aluminum and articles thereof | $11,874,372 | $14,868,429 | $21,105,830 | $30,171,788 | $18,129,931 | $19,578,792 | $23,456,518 |
| Lead and articles thereof | $61,681 | $25,443 | $15,919 | $50,936 | $37,208 | $23,282 | $17,482 |
| Zinc and articles thereof | $33,562 | $44,769 | $725,339 | $368,206 | $127,202 | $151,270 | $236,277 |
| Tin and articles thereof | $3,733 | $5,431 | $23,589 | $27,422 | $35,282 | $85,939 | $172,142 |
| Other base metals; cermets; articles thereof | $363,451 | $99,368 | $243,985 | $223,820 | $1,574,543 | $138,487 | $231,877 |
| Tools, implements, cutlery, spoons and forks, of base metal | $10,644,279 | $8,512,853 | $12,455,155 | $13,635,459 | $9,155,404 | $13,543,386 | $14,860,058 |
| Miscellaneous articles of base metal | $14,496,773 | $18,819,824 | $50,436,942 | $28,519,188 | $23,339,459 | $26,110,553 | $30,754,026 |
| Total | $123,805,301 | $171,393,191 | $273,898,313 | $306,372,278 | $162,760,064 | $214,148,967 | $275,637,977 |
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