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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $1,178,987,077 | $1,631,386,032 | $1,880,226,173 | $2,517,663,053 | $1,114,989,201 | $1,541,497,897 | $1,866,117,538 |
| Articles of iron or steel | $334,404,830 | $355,519,498 | $442,614,941 | $537,786,164 | $408,786,571 | $398,703,832 | $487,018,595 |
| Copper and articles thereof | $77,829,989 | $114,340,372 | $109,479,712 | $117,018,838 | $92,172,956 | $129,831,402 | $154,497,366 |
| Nickel and articles thereof | $3,070,949 | $5,053,061 | $4,212,236 | $1,707,176 | $1,029,749 | $2,435,993 | $2,574,486 |
| Aluminum and articles thereof | $394,809,112 | $597,713,870 | $654,188,213 | $626,824,294 | $330,796,622 | $498,306,904 | $522,891,364 |
| Lead and articles thereof | $2,190,207 | $2,680,563 | $6,252,062 | $6,885,800 | $4,366,294 | $4,500,614 | $5,480,889 |
| Zinc and articles thereof | $24,285,420 | $55,504,470 | $36,371,176 | $29,226,667 | $19,842,316 | $27,911,568 | $26,159,420 |
| Tin and articles thereof | $1,423,561 | $1,914,076 | $1,141,551 | $1,534,882 | $952,337 | $1,112,337 | $1,664,179 |
| Other base metals; cermets; articles thereof | $4,848,818 | $8,154,455 | $5,284,611 | $6,427,896 | $3,055,209 | $2,261,077 | $3,223,282 |
| Tools, implements, cutlery, spoons and forks, of base metal | $122,000,802 | $109,106,655 | $104,263,561 | $123,124,630 | $85,917,393 | $95,591,276 | $122,277,436 |
| Miscellaneous articles of base metal | $45,626,942 | $47,113,314 | $54,439,964 | $60,185,852 | $50,209,290 | $47,324,114 | $52,291,902 |
| Total | $2,189,477,707 | $2,928,486,366 | $3,298,474,200 | $4,028,385,252 | $2,112,117,938 | $2,749,477,014 | $3,244,196,457 |
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