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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $1,105,524,935 | $1,206,131,267 | $1,796,137,004 | $2,293,081,974 | $1,482,909,330 | $2,054,020,458 | $2,096,630,667 |
| Articles of iron or steel | $1,074,737,329 | $1,382,447,022 | $1,919,925,094 | $2,281,180,745 | $1,511,570,473 | $1,706,632,679 | $2,121,613,851 |
| Copper and articles thereof | $102,490,983 | $358,567,741 | $312,968,879 | $351,091,455 | $317,219,913 | $619,302,856 | $825,066,253 |
| Nickel and articles thereof | $10,194,268 | $3,967,819 | $7,459,263 | $8,968,397 | $5,768,579 | $14,560,508 | $26,462,429 |
| Aluminum and articles thereof | $465,643,147 | $769,505,040 | $831,971,775 | $737,307,822 | $597,798,921 | $720,892,498 | $841,276,731 |
| Lead and articles thereof | $2,924,448 | $633,995 | $4,473,795 | $1,320,106 | $2,861,524 | $3,137,834 | $5,029,878 |
| Zinc and articles thereof | $17,345,156 | $136,762,454 | $127,883,934 | $77,030,576 | $49,966,625 | $47,337,572 | $29,221,247 |
| Tin and articles thereof | $12,989,222 | $11,251,092 | $15,329,994 | $33,786,161 | $23,135,481 | $26,426,363 | $33,565,118 |
| Other base metals; cermets; articles thereof | $845,157 | $382,308 | $138,931 | $755,003 | $5,534,481 | $5,156,788 | $14,707,134 |
| Tools, implements, cutlery, spoons and forks, of base metal | $61,952,602 | $78,601,455 | $85,909,361 | $111,091,774 | $103,069,663 | $94,469,897 | $109,923,935 |
| Miscellaneous articles of base metal | $223,961,161 | $250,483,397 | $413,444,487 | $568,128,047 | $528,515,926 | $534,750,230 | $658,327,450 |
| Total | $3,078,608,408 | $4,198,733,590 | $5,515,642,517 | $6,463,742,060 | $4,628,350,916 | $5,826,687,683 | $6,761,824,693 |
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