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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $33,444,213 | $23,020,550 | $35,857,883 | $48,143,555 | $50,761,241 | $72,915,232 | $86,705,525 |
| Articles of iron or steel | $133,998,075 | $146,526,317 | $178,372,523 | $223,659,460 | $177,889,563 | $212,856,765 | $298,696,576 |
| Copper and articles thereof | $10,093,406 | $7,919,502 | $16,331,600 | $12,521,946 | $10,012,814 | $15,154,062 | $22,334,962 |
| Nickel and articles thereof | $195,234 | $967,782 | $59,363 | $343,344 | $193,842 | $181,488 | $187,160 |
| Aluminum and articles thereof | $10,899,513 | $12,955,360 | $13,086,326 | $15,867,672 | $11,705,990 | $16,149,159 | $20,192,914 |
| Lead and articles thereof | $1,564,044 | $1,413,871 | $1,538,760 | $1,989,101 | $1,647,446 | $3,652,506 | $4,121,483 |
| Zinc and articles thereof | $1,269,125 | $3,673,164 | $3,270,085 | $3,831,999 | $5,633,672 | $4,951,428 | $5,653,918 |
| Tin and articles thereof | $17,406 | $114,924 | $30,615 | $214,742 | $920,110 | $815,442 | $491,575 |
| Other base metals; cermets; articles thereof | $123,676 | $124,439 | $133,421 | $148,937 | $112,558 | $176,890 | $491,709 |
| Tools, implements, cutlery, spoons and forks, of base metal | $14,757,108 | $12,973,921 | $15,605,214 | $17,192,850 | $15,480,217 | $18,598,515 | $22,003,787 |
| Miscellaneous articles of base metal | $19,956,234 | $18,806,771 | $24,303,449 | $24,310,264 | $25,439,814 | $23,655,633 | $26,721,272 |
| Total | $226,318,034 | $228,496,601 | $288,589,239 | $348,223,870 | $299,797,267 | $369,107,120 | $487,600,881 |
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