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| Chapter | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $35,336,718 | $74,398,080 | $121,310,254 | $33,780,426 | $25,977,380 | $36,476,266 |
| Articles of iron or steel | $59,333,815 | $98,543,056 | $134,957,753 | $80,420,305 | $68,422,152 | $68,392,279 |
| Copper and articles thereof | $3,470,935 | $4,733,350 | $5,272,118 | $2,493,129 | $2,634,006 | $3,340,107 |
| Nickel and articles thereof | $644,144 | $2,744,646 | $2,353,225 | $70,100 | $384,497 | $1,131,282 |
| Aluminum and articles thereof | $17,236,658 | $31,350,265 | $43,548,220 | $27,423,329 | $23,172,412 | $22,617,744 |
| Lead and articles thereof | $59,245 | $93,377 | $116,673 | $88,918 | $39,136 | $62,531 |
| Zinc and articles thereof | $160,467 | $254,713 | $195,831 | $132,101 | $167,499 | $87,084 |
| Tin and articles thereof | $14,976 | $32,033 | $30,559 | $16,116 | $15,175 | $17,885 |
| Other base metals; cermets; articles thereof | $55,082 | $55,053 | $136,982 | $22,344 | $43,748 | $9,954 |
| Tools, implements, cutlery, spoons and forks, of base metal | $6,303,489 | $9,127,587 | $12,129,796 | $7,018,169 | $7,339,185 | $7,844,568 |
| Miscellaneous articles of base metal | $8,139,568 | $12,873,728 | $17,857,831 | $9,834,759 | $10,272,134 | $11,443,486 |
| Total | $130,755,097 | $234,205,888 | $337,909,242 | $161,299,696 | $138,467,324 | $151,423,186 |
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