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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $354,778,719 | $447,225,036 | $445,879,620 | $586,984,550 | $314,832,706 | $561,601,401 | $675,011,320 |
| Articles of iron or steel | $197,435,292 | $262,691,284 | $358,171,099 | $472,924,072 | $285,431,346 | $328,299,232 | $510,176,001 |
| Copper and articles thereof | $1,038,221,701 | $1,923,957,534 | $1,824,682,719 | $2,362,605,303 | $1,454,422,061 | $2,055,955,233 | $3,252,186,023 |
| Nickel and articles thereof | $136,589 | $147,820 | $299,729 | $446,525 | $1,350,543 | $2,792,724 | $252,259 |
| Aluminum and articles thereof | $139,113,790 | $252,040,673 | $323,925,022 | $337,977,334 | $201,995,459 | $287,510,971 | $322,950,308 |
| Lead and articles thereof | $72,833,371 | $87,710,946 | $181,569,364 | $180,224,699 | $134,625,544 | $177,670,528 | $177,960,315 |
| Zinc and articles thereof | $116,102,167 | $258,440,102 | $331,190,550 | $199,785,958 | $151,696,853 | $191,968,912 | $208,192,750 |
| Tin and articles thereof | $13,036 | $84,080 | $23,894 | $635,963 | $1,002,081 | $435,153 | $1,126,139 |
| Other base metals; cermets; articles thereof | $2,612,680 | $5,594,570 | $10,151,796 | $13,023,713 | $9,565,368 | $12,180,285 | $12,161,401 |
| Tools, implements, cutlery, spoons and forks, of base metal | $20,172,635 | $24,620,117 | $32,810,009 | $36,905,192 | $25,628,962 | $27,612,913 | $37,152,127 |
| Miscellaneous articles of base metal | $28,563,896 | $34,874,778 | $47,251,641 | $49,199,254 | $43,867,569 | $52,454,511 | $73,918,644 |
| Total | $1,969,983,876 | $3,297,386,940 | $3,555,955,443 | $4,240,712,563 | $2,624,418,492 | $3,698,481,863 | $5,271,087,287 |
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