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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $195,087,000 | $226,626,109 | $362,624,206 | $492,362,946 | $380,795,763 | $403,661,807 | $586,387,596 |
| Articles of iron or steel | $107,228,000 | $105,534,009 | $129,071,096 | $163,781,981 | $164,743,310 | $196,038,460 | $202,127,116 |
| Copper and articles thereof | $47,347,000 | $72,414,198 | $92,192,682 | $98,597,346 | $74,790,340 | $109,269,149 | $120,966,311 |
| Nickel and articles thereof | $187,000 | $176,959 | $297,804 | $353,769 | $185,372 | $358,575 | $232,550 |
| Aluminum and articles thereof | $89,549,000 | $94,040,039 | $110,284,625 | $122,739,394 | $102,908,201 | $134,096,963 | $142,336,269 |
| Lead and articles thereof | $403,000 | $4,327,419 | $9,729,937 | $8,900,080 | $4,436,001 | $4,126,487 | $3,998,995 |
| Zinc and articles thereof | $645,000 | $1,392,189 | $3,158,253 | $3,056,033 | $2,436,119 | $2,869,729 | $2,522,242 |
| Tin and articles thereof | $254,000 | $89,588 | $227,267 | $562,336 | $300,924 | $420,641 | $723,590 |
| Other base metals; cermets; articles thereof | $134,000 | $90,900 | $217,968 | $187,411 | $163,610 | $152,589 | $91,289 |
| Tools, implements, cutlery, spoons and forks, of base metal | $24,366,000 | $22,733,870 | $28,810,051 | $36,520,069 | $33,883,319 | $40,366,308 | $40,772,763 |
| Miscellaneous articles of base metal | $43,678,000 | $40,647,785 | $51,424,508 | $65,089,303 | $62,990,237 | $75,764,397 | $81,240,365 |
| Total | $508,878,000 | $568,073,065 | $788,038,397 | $992,150,668 | $827,633,196 | $967,125,105 | $1,181,399,086 |
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