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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $545,768,544 | $696,209,392 | $965,308,451 | $1,033,211,097 | $476,421,878 | $764,059,403 | $1,027,519,977 |
| Articles of iron or steel | $432,229,903 | $528,794,846 | $720,593,277 | $882,274,297 | $515,643,014 | $515,941,437 | $625,871,763 |
| Copper and articles thereof | $59,768,689 | $128,971,114 | $146,113,463 | $124,540,877 | $85,288,652 | $129,716,319 | $192,279,523 |
| Nickel and articles thereof | $12,767,206 | $16,094,821 | $32,115,255 | $23,693,340 | $8,763,268 | $27,164,484 | $20,823,566 |
| Aluminum and articles thereof | $659,360,326 | $898,223,784 | $1,026,344,329 | $945,570,117 | $561,799,899 | $745,245,474 | $939,927,702 |
| Lead and articles thereof | $6,292,838 | $9,836,569 | $23,180,131 | $16,006,287 | $10,058,432 | $15,154,243 | $13,987,368 |
| Zinc and articles thereof | $24,811,534 | $55,777,573 | $60,819,334 | $35,114,322 | $31,544,925 | $36,867,606 | $37,149,026 |
| Tin and articles thereof | $1,057,159 | $340,502 | $643,783 | $830,313 | $391,439 | $663,661 | $634,087 |
| Other base metals; cermets; articles thereof | $8,810,511 | $9,445,919 | $9,066,117 | $8,603,308 | $3,742,705 | $11,493,166 | $11,614,144 |
| Tools, implements, cutlery, spoons and forks, of base metal | $118,793,137 | $236,463,218 | $280,790,605 | $308,974,825 | $210,173,575 | $218,337,491 | $249,605,645 |
| Miscellaneous articles of base metal | $173,767,731 | $203,767,716 | $271,750,704 | $289,743,635 | $217,342,107 | $247,027,132 | $267,668,587 |
| Total | $2,043,427,578 | $2,783,925,454 | $3,536,725,449 | $3,668,562,418 | $2,121,169,894 | $2,711,670,416 | $3,387,081,388 |
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