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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $79,697,393 | $108,936,100 | $113,002,076 | $154,504,127 | $71,469,263 | $89,613,140 |
| Articles of iron or steel | $91,905,709 | $126,475,112 | $141,490,604 | $157,326,777 | $111,937,254 | $127,620,634 |
| Copper and articles thereof | $7,926,920 | $14,198,080 | $18,330,252 | $18,677,183 | $9,158,605 | $12,095,786 |
| Nickel and articles thereof | $11,698 | $31,433 | $151,323 | $18,163 | $102,640 | $99,938 |
| Aluminum and articles thereof | $50,531,742 | $62,184,765 | $80,340,435 | $84,448,911 | $52,924,453 | $63,694,792 |
| Lead and articles thereof | $1,086,672 | $1,835,812 | $2,911,187 | $2,321,824 | $1,666,247 | $1,845,200 |
| Zinc and articles thereof | $1,740,564 | $3,331,463 | $3,503,073 | $3,530,788 | $1,095,990 | $1,808,846 |
| Tin and articles thereof | $864,938 | $699,679 | $1,131,573 | $1,228,203 | $527,318 | $1,144,151 |
| Other base metals; cermets; articles thereof | $4,604,369 | $4,607,100 | $3,965,811 | $4,725,967 | $2,389,668 | $3,421,621 |
| Tools, implements, cutlery, spoons and forks, of base metal | $20,249,078 | $21,526,568 | $23,463,506 | $26,037,205 | $20,964,412 | $23,673,650 |
| Miscellaneous articles of base metal | $23,937,970 | $30,554,145 | $29,143,603 | $32,408,514 | $25,894,191 | $32,572,769 |
| Total | $282,557,053 | $374,380,257 | $417,433,443 | $485,227,662 | $298,130,041 | $357,590,527 |
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