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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $35,817,146 | $36,604,396 | $47,767,062 | $108,946,485 | $80,199,855 | $110,543,645 | $128,481,034 |
| Articles of iron or steel | $83,608,625 | $110,334,599 | $120,510,435 | $208,946,401 | $209,939,342 | $176,009,050 | $224,026,150 |
| Copper and articles thereof | $4,884,146 | $8,953,975 | $19,207,170 | $22,236,333 | $15,192,388 | $18,297,596 | $21,354,678 |
| Nickel and articles thereof | $67,123 | $14,798 | $25,885 | $24,096 | $258,599 | $68,326 | $59,637 |
| Aluminum and articles thereof | $13,533,478 | $18,310,286 | $33,069,271 | $73,239,341 | $27,203,352 | $32,788,423 | $39,578,968 |
| Lead and articles thereof | $340,893 | $726,551 | $254,006 | $416,504 | $43,456 | $822,673 | $418,195 |
| Zinc and articles thereof | $7,928,847 | $28,099,737 | $36,142,813 | $28,595,274 | $16,364,737 | $25,485,983 | $17,651,775 |
| Tin and articles thereof | $1,020,318 | $91,801 | $252,169 | $11,020,728 | $214,414 | $234,859 | $513,707 |
| Other base metals; cermets; articles thereof | $39,273 | $61,887 | $21,806 | $192,714 | $20,121 | $12,130 | $25,785 |
| Tools, implements, cutlery, spoons and forks, of base metal | $13,742,823 | $15,114,178 | $21,797,162 | $23,030,235 | $19,805,320 | $25,200,851 | $33,506,400 |
| Miscellaneous articles of base metal | $11,960,708 | $12,020,129 | $12,827,513 | $20,244,237 | $21,970,485 | $23,686,884 | $29,252,134 |
| Total | $172,943,380 | $230,332,337 | $291,875,292 | $496,892,348 | $391,212,069 | $413,150,420 | $494,868,463 |
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