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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $86,201,292 | $132,702,683 | $171,278,931 | $651,355,133 | $125,348,837 | $192,454,533 | $285,739,657 |
| Articles of iron or steel | $278,506,686 | $221,692,169 | $280,823,181 | $401,847,917 | $290,392,872 | $229,535,181 | $292,075,021 |
| Copper and articles thereof | $17,851,962 | $17,660,359 | $23,044,143 | $40,488,213 | $25,963,284 | $36,528,567 | $38,884,709 |
| Nickel and articles thereof | $1,945,042 | $326,469 | $289,852 | $1,042,363 | $661,535 | $878,592 | $2,885,314 |
| Aluminum and articles thereof | $58,960,205 | $45,800,039 | $59,977,843 | $108,014,894 | $98,477,171 | $93,636,011 | $146,580,967 |
| Lead and articles thereof | $178,758 | $60,189 | $67,878 | $2,759,132 | $4,379,392 | $504,995 | $1,423,086 |
| Zinc and articles thereof | $453,925 | $759,528 | $1,628,627 | $1,573,588 | $1,024,141 | $1,079,833 | $1,338,053 |
| Tin and articles thereof | $23,907 | $186,693 | $247,617 | $203,375 | $193,263 | $217,877 | $338,627 |
| Other base metals; cermets; articles thereof | $15,717,404 | $7,679,545 | $17,090,567 | $26,655,775 | $9,120,560 | $13,215,867 | $20,537,469 |
| Tools, implements, cutlery, spoons and forks, of base metal | $10,288,110 | $6,992,025 | $9,353,223 | $17,534,442 | $17,505,646 | $15,600,433 | $18,164,115 |
| Miscellaneous articles of base metal | $34,152,012 | $19,046,341 | $30,751,663 | $66,427,938 | $54,712,817 | $50,668,162 | $42,567,255 |
| Total | $504,279,303 | $452,906,040 | $594,553,525 | $1,317,902,770 | $627,779,518 | $634,320,051 | $850,534,273 |
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