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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $22,663,549 | $26,471,530 | $34,018,204 | $38,484,471 | $30,164,959 | $30,047,310 |
| Articles of iron or steel | $37,885,585 | $24,242,321 | $26,872,364 | $51,776,061 | $61,082,875 | $60,339,940 |
| Copper and articles thereof | $393,210 | $4,687,686 | $3,908,434 | $7,319,973 | $1,873,219 | $2,956,356 |
| Nickel and articles thereof | | | | $4,028 | $35,585 | |
| Aluminum and articles thereof | $19,288,217 | $25,957,068 | $27,307,580 | $33,011,621 | $36,273,832 | $52,831,856 |
| Lead and articles thereof | $12,009 | $115,901 | $53,116 | $60,701 | $55,912 | $69,718 |
| Zinc and articles thereof | $1,534,081 | $3,382,329 | $1,969,880 | $1,633,407 | $1,241,080 | $1,870,366 |
| Tin and articles thereof | $9,325 | $124,040 | $38,432 | $11,757 | $18,035 | $918 |
| Other base metals; cermets; articles thereof | $197 | $1,222 | $1,924 | $31,782 | | $2,650 |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,506,060 | $1,932,923 | $2,938,748 | $3,228,483 | $2,407,781 | $3,356,322 |
| Miscellaneous articles of base metal | $10,510,905 | $10,561,561 | $8,198,152 | $10,815,563 | $11,354,648 | $14,885,966 |
| Total | $93,803,138 | $97,476,581 | $105,306,834 | $146,377,847 | $144,507,926 | $166,361,402 |
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