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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $153,146,693 | $347,211,822 | $415,785,035 | $60,911,412 | $43,524,377 | $203,749,037 |
| Articles of iron or steel | $4,460,451 | $12,051,375 | $11,801,120 | $10,828,130 | $15,147,486 | $7,650,603 |
| Copper and articles thereof | $3,985,358 | $6,125,903 | $10,297,219 | $677,579 | $8,074,613 | $10,814,808 |
| Nickel and articles thereof | $61,970,916 | $247,213,742 | $395,960,319 | $166,277,667 | $266,331,517 | $454,468,404 |
| Aluminum and articles thereof | $597,621 | $449,344 | $613,989 | $951,456 | $111,247 | $129,377 |
| Zinc and articles thereof | $53,498 | $23,853 | $108 | $19,357 | $131,199 | |
| Tin and articles thereof | | $15,463 | $108,800 | $1 | | |
| Other base metals; cermets; articles thereof | $27,034 | $4,528 | $2,101 | $503 | $6,588 | |
| Tools, implements, cutlery, spoons and forks, of base metal | $252,847 | $348,755 | $527,257 | $8,815,166 | $3,715,957 | $756,369 |
| Miscellaneous articles of base metal | $65,194 | $161,808 | $134,349 | $8,265,785 | $140,639 | $127,612 |
| Total | $224,559,612 | $613,606,593 | $835,230,297 | $256,747,056 | $337,183,623 | $677,696,210 |
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