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| Chapter | 2005 | 2006 | 2007 | 2008 | 2010 |
| Iron and steel | $29,695,870 | $24,755,851 | $29,211,524 | $275,489,594 | $16,736,745 |
| Articles of iron or steel | $36,478,260 | $132,489,349 | $131,479,747 | $235,312,120 | $128,968,503 |
| Copper and articles thereof | $2,410,465 | $21,231,964 | $22,834,989 | $25,263,417 | $22,556,542 |
| Nickel and articles thereof | | | | | $5,206 |
| Aluminum and articles thereof | $10,149,170 | $44,155,704 | $67,374,358 | $181,476,292 | $72,278,303 |
| Lead and articles thereof | $33,471 | $2,891,469 | $3,525,864 | $4,160,160 | $6,987,262 |
| Zinc and articles thereof | $72,326 | $124,292 | $389,894 | $222,538 | $573,160 |
| Tin and articles thereof | | $22,707 | | $363,580 | $42,454 |
| Other base metals; cermets; articles thereof | $64,066 | $20,525 | | | $38,146 |
| Tools, implements, cutlery, spoons and forks, of base metal | $520,139 | $1,735,899 | $1,398,641 | $671,530 | $1,577,880 |
| Miscellaneous articles of base metal | $2,744,417 | $9,480,476 | $7,221,391 | $17,067,524 | $5,410,858 |
| Total | $82,168,184 | $236,908,236 | $263,436,408 | $740,026,755 | $255,175,059 |
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