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| Chapter | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $19,252,447 | $39,118,115 | $56,187,550 | $22,044,119 | $30,927,751 | $56,604,641 |
| Articles of iron or steel | $14,551,422 | $22,695,835 | $27,690,794 | $10,651,619 | $3,878,587 | $5,937,938 |
| Copper and articles thereof | $7,851,964 | $8,606,667 | $8,059,208 | $4,404,542 | $10,983,024 | $11,479,850 |
| Aluminum and articles thereof | $321,074,758 | $351,303,588 | $267,596,093 | $159,390,767 | $176,651,148 | $257,821,232 |
| Lead and articles thereof | $154,383 | $418,747 | $234,707 | $243,363 | $304,520 | $232,790 |
| Zinc and articles thereof | $57,597 | $19,816 | $9,263 | $361,013 | $42,642 | $43,515 |
| Tin and articles thereof | | $64,376 | $1,280 | | | $72,060 |
| Other base metals; cermets; articles thereof | $151 | | $16,443 | $244 | | $3,052 |
| Tools, implements, cutlery, spoons and forks, of base metal | $192,975 | $477,444 | $221,437 | $360,070 | $234,473 | $328,540 |
| Miscellaneous articles of base metal | $2,495,031 | $2,586,916 | $2,732,631 | $1,318,627 | $812,053 | $702,657 |
| Total | $365,630,728 | $425,291,504 | $362,749,406 | $198,774,364 | $223,834,198 | $333,226,275 |
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