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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $56,297,254 | $54,294,289 | $105,018,274 | $79,181,301 | $110,072,098 | $116,527,456 | $106,372,973 |
| Articles of iron or steel | $196,191,146 | $354,189,196 | $395,603,750 | $407,053,742 | $256,414,034 | $344,196,688 | $170,221,894 |
| Copper and articles thereof | $821,853 | $2,697,863 | $3,406,457 | $5,449,792 | $6,684,133 | $13,267,776 | $11,080,501 |
| Nickel and articles thereof | $248,228 | $234,229 | $110,960 | $16,511 | $127,956 | $273,542 | $193,445 |
| Aluminum and articles thereof | $74,441,217 | $24,562,651 | $36,882,413 | $40,418,358 | $35,845,840 | $34,899,928 | $31,762,278 |
| Lead and articles thereof | $176,330 | $100,239 | $272,770 | $85,652 | $22,184 | $58,040 | |
| Zinc and articles thereof | $147,882 | $139,167 | $419,363 | $726,289 | $164,607 | $157,320 | |
| Tin and articles thereof | $14,523 | $36,422 | $87,518 | $52,932 | $83,472 | $377,998 | $172,604 |
| Other base metals; cermets; articles thereof | $57,289 | $9,650 | $42,067 | $429,531 | $1,401 | $545 | $723 |
| Tools, implements, cutlery, spoons and forks, of base metal | $10,424,920 | $11,768,521 | $14,443,047 | $12,113,267 | $9,539,525 | $15,894,885 | $24,549,743 |
| Miscellaneous articles of base metal | $7,743,924 | $9,126,468 | $15,273,228 | $13,415,973 | $11,756,254 | $13,570,443 | $8,165,964 |
| Total | $346,564,566 | $457,158,695 | $571,559,847 | $558,943,348 | $430,711,504 | $539,224,621 | $352,520,125 |
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