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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $235,572,547 | $307,399,249 | $371,673,514 | $678,430,297 | $283,478,174 | $292,179,798 | $402,816,183 |
| Articles of iron or steel | $139,386,631 | $150,229,923 | $159,928,224 | $233,119,054 | $227,060,146 | $227,883,408 | $376,607,635 |
| Copper and articles thereof | $35,677,827 | $51,801,182 | $61,367,297 | $70,465,003 | $62,712,779 | $64,784,463 | $99,778,623 |
| Nickel and articles thereof | $520,266 | $483,223 | $1,029,252 | $796,078 | $701,544 | $1,402,163 | $1,623,876 |
| Aluminum and articles thereof | $51,288,183 | $69,646,604 | $83,427,486 | $90,337,467 | $75,581,001 | $87,156,460 | $106,552,938 |
| Lead and articles thereof | $2,988,489 | $3,373,074 | $5,847,578 | $5,515,216 | $2,470,075 | $6,413,146 | $4,450,262 |
| Zinc and articles thereof | $6,699,597 | $17,152,810 | $18,462,011 | $12,354,421 | $6,825,194 | $16,080,920 | $15,153,204 |
| Tin and articles thereof | $571,443 | $451,370 | $1,004,323 | $1,253,867 | $722,770 | $954,527 | $1,327,256 |
| Other base metals; cermets; articles thereof | $91,754 | $271,403 | $178,401 | $632,431 | $486,646 | $363,578 | $585,061 |
| Tools, implements, cutlery, spoons and forks, of base metal | $42,020,109 | $48,091,643 | $53,401,036 | $65,210,606 | $69,777,316 | $74,641,248 | $91,356,975 |
| Miscellaneous articles of base metal | $41,085,012 | $52,076,094 | $57,504,107 | $73,893,221 | $66,491,620 | $89,729,855 | $111,105,336 |
| Total | $555,901,858 | $700,976,575 | $813,823,229 | $1,232,007,661 | $796,307,265 | $861,589,566 | $1,211,357,349 |
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