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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $17,177,397 | $37,880,491 | $47,892,010 | $62,774,178 | $45,344,307 | $56,113,939 | $62,828,191 |
| Articles of iron or steel | $37,889,120 | $42,912,136 | $57,834,581 | $125,949,465 | $119,138,046 | $113,167,198 | $138,412,937 |
| Copper and articles thereof | $19,473,577 | $39,515,174 | $42,741,717 | $46,332,099 | $32,536,777 | $58,823,051 | $71,557,787 |
| Nickel and articles thereof | $310,616 | $73,553 | $8,181 | $8,210 | $4,877 | $322,944 | $79,186 |
| Aluminum and articles thereof | $81,618,769 | $127,288,954 | $149,537,962 | $198,423,464 | $185,975,215 | $181,942,236 | $159,279,140 |
| Lead and articles thereof | $2,185,243 | $4,324,173 | $7,435,663 | $5,273,767 | $1,931,142 | $2,016,944 | $707,109 |
| Zinc and articles thereof | $611,262 | $1,142,643 | $2,722,431 | $742,862 | $1,062,538 | $874,575 | $1,025,496 |
| Tin and articles thereof | $20,536 | | $38,398 | $94,759 | $135,334 | $529,508 | $419,758 |
| Other base metals; cermets; articles thereof | $11,776 | $91,444 | $29,231 | $24,301 | $12,666 | $23,632 | $134,694 |
| Tools, implements, cutlery, spoons and forks, of base metal | $2,300,599 | $1,860,853 | $2,679,323 | $2,589,461 | $3,211,058 | $2,180,352 | $3,672,493 |
| Miscellaneous articles of base metal | $5,025,406 | $2,749,525 | $2,546,991 | $13,858,413 | $16,527,970 | $28,461,585 | $13,405,873 |
| Total | $166,624,301 | $257,838,946 | $313,466,488 | $456,070,979 | $405,879,930 | $444,455,964 | $451,522,664 |
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