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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $448,969,728 | $630,682,890 | $862,873,416 | $852,944,066 | $282,480,775 | $325,212,862 | $368,718,510 |
| Articles of iron or steel | $1,020,732,726 | $1,093,366,052 | $1,275,732,058 | $1,308,680,547 | $720,504,756 | $638,784,260 | $733,760,541 |
| Copper and articles thereof | $192,257,714 | $237,212,494 | $257,895,525 | $211,451,515 | $95,170,513 | $117,887,500 | $118,613,855 |
| Nickel and articles thereof | $26,274,834 | $29,236,487 | $24,814,235 | $37,955,858 | $19,219,525 | $29,833,803 | $38,655,563 |
| Aluminum and articles thereof | $375,346,335 | $452,555,196 | $586,322,665 | $589,936,200 | $399,628,109 | $337,260,861 | $403,453,925 |
| Lead and articles thereof | $57,336,564 | $72,482,903 | $138,197,897 | $97,701,775 | $56,213,530 | $67,240,003 | $68,655,548 |
| Zinc and articles thereof | $9,251,006 | $18,471,439 | $25,257,905 | $21,253,278 | $7,361,658 | $7,136,475 | $7,515,485 |
| Tin and articles thereof | $6,815,040 | $8,758,989 | $10,171,095 | $13,231,716 | $6,057,492 | $8,657,001 | $8,116,702 |
| Other base metals; cermets; articles thereof | $18,630,591 | $19,025,493 | $18,228,469 | $33,227,572 | $33,882,053 | $42,863,238 | $30,879,835 |
| Tools, implements, cutlery, spoons and forks, of base metal | $199,570,250 | $224,875,544 | $302,850,309 | $297,392,783 | $204,605,635 | $202,737,497 | $247,828,625 |
| Miscellaneous articles of base metal | $173,955,122 | $201,680,926 | $278,481,006 | $280,002,961 | $189,422,162 | $164,905,597 | $140,597,648 |
| Total | $2,529,139,910 | $2,988,348,413 | $3,780,824,580 | $3,743,778,271 | $2,014,546,208 | $1,942,519,097 | $2,166,796,237 |
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