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| Chapter | 2005 | 2006 | 2007 | 2008 |
| Iron and steel | $29,172,991 | $27,878,767 | $29,216,322 | $43,716,041 |
| Articles of iron or steel | $94,061,472 | $125,467,784 | $209,376,637 | $203,899,165 |
| Copper and articles thereof | $5,889,230 | $5,059,288 | $5,979,585 | $14,091,015 |
| Nickel and articles thereof | $64,728 | $42,050 | $15,603 | $38,150 |
| Aluminum and articles thereof | $9,255,199 | $12,031,906 | $11,822,987 | $28,585,846 |
| Lead and articles thereof | $791,767 | $326,898 | $181,834 | $156,357 |
| Zinc and articles thereof | $4,008,646 | $8,070,104 | $9,131,219 | $4,247,439 |
| Tin and articles thereof | $5,519,939 | $2,934,399 | $3,890,896 | $381,566 |
| Other base metals; cermets; articles thereof | $330,162 | $231,009 | $442,693 | $2,880,065 |
| Tools, implements, cutlery, spoons and forks, of base metal | $14,202,048 | $16,354,544 | $20,056,546 | $28,429,443 |
| Miscellaneous articles of base metal | $11,951,675 | $14,502,170 | $15,425,572 | $16,202,954 |
| Total | $175,247,857 | $212,898,919 | $305,539,894 | $342,628,041 |
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