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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $95,168,937 | $60,224,285 | $117,717,115 | $155,206,874 | $106,162,745 | $122,358,229 | $159,351,277 |
| Articles of iron or steel | $65,934,045 | $41,169,452 | $92,534,212 | $123,643,304 | $78,468,634 | $87,587,610 | $115,819,222 |
| Copper and articles thereof | $391,594 | $671,524 | $6,414,562 | $16,081,898 | $4,209,629 | $2,391,286 | $3,983,580 |
| Nickel and articles thereof | $1,354 | $125 | $6,981 | $51,794 | $24,487 | $1,691 | $5,888 |
| Aluminum and articles thereof | $7,727,873 | $19,679,633 | $59,101,737 | $58,105,677 | $48,579,321 | $64,760,230 | $83,690,390 |
| Lead and articles thereof | $1,674,655 | $786,391 | $3,518,257 | $1,710,498 | $2,141,129 | $4,232,781 | $5,600,964 |
| Zinc and articles thereof | $604,601 | $1,199,442 | $1,578,373 | $1,486,211 | $1,049,445 | $926,277 | $1,147,279 |
| Tin and articles thereof | $118 | | $200 | $7,877 | $950 | $49 | $77,834 |
| Other base metals; cermets; articles thereof | $3,938 | $984 | | $12,745 | $2,824 | $102 | $4 |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,953,144 | $2,067,502 | $2,752,020 | $3,456,639 | $3,788,994 | $4,111,834 | $3,783,628 |
| Miscellaneous articles of base metal | $4,371,561 | $3,765,144 | $4,497,157 | $5,303,752 | $5,424,145 | $6,045,284 | $8,739,733 |
| Total | $177,831,820 | $129,564,482 | $288,120,614 | $365,067,269 | $249,852,303 | $292,415,373 | $382,199,799 |
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