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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $105,140,468 | $187,917,135 | $221,666,023 | $381,516,771 | $196,092,183 | $245,911,625 | $319,191,786 |
| Articles of iron or steel | $65,194,336 | $106,475,216 | $180,176,378 | $262,534,359 | $232,487,727 | $284,896,813 | $301,783,908 |
| Copper and articles thereof | $4,476,765 | $7,101,813 | $10,609,611 | $11,146,372 | $7,772,671 | $13,346,611 | $22,954,956 |
| Nickel and articles thereof | $4,026 | $1,201 | $77,061 | $5,453 | $23,171 | $320,624 | $607,956 |
| Aluminum and articles thereof | $36,554,125 | $42,441,241 | $57,039,296 | $76,967,917 | $69,365,991 | $83,620,307 | $83,334,543 |
| Lead and articles thereof | $118,786 | $278,719 | $99,986 | $112,576 | $147,953 | $432,080 | $381,798 |
| Zinc and articles thereof | $100,515 | $283,003 | $464,818 | $764,040 | $116,497 | $122,418 | $171,714 |
| Tin and articles thereof | $75,720 | $202,470 | $56,543 | $63,006 | $54,276 | $271,112 | $334,592 |
| Other base metals; cermets; articles thereof | $32,249 | $135,356 | $59,190 | $47,951 | $17,481 | $77,224 | $470,245 |
| Tools, implements, cutlery, spoons and forks, of base metal | $15,581,376 | $66,438,643 | $86,730,644 | $97,269,634 | $74,271,851 | $91,389,765 | $143,936,737 |
| Miscellaneous articles of base metal | $22,753,606 | $55,464,437 | $72,481,502 | $98,255,072 | $70,571,321 | $93,953,441 | $109,814,817 |
| Total | $250,031,972 | $466,739,234 | $629,461,052 | $928,683,151 | $650,921,122 | $814,342,020 | $982,983,052 |
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