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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $15,119,899 | $18,813,793 | $26,374,378 | $33,093,158 | $14,944,774 | $14,970,559 | $18,376,140 |
| Articles of iron or steel | $26,294,083 | $27,004,692 | $39,006,291 | $35,578,588 | $17,624,971 | $21,549,345 | $30,056,076 |
| Copper and articles thereof | $1,396,430 | $1,808,286 | $2,354,281 | $1,604,122 | $1,064,061 | $1,106,971 | $1,504,128 |
| Nickel and articles thereof | $26,332 | $7,765 | $5,056 | $8,112 | $849 | $6,759 | $101 |
| Aluminum and articles thereof | $3,774,664 | $3,463,909 | $4,195,968 | $5,778,271 | $3,143,632 | $3,538,194 | $7,007,538 |
| Lead and articles thereof | $6,112 | $59,206 | $19,808 | $32,775 | $61,451 | $157,333 | $20,217 |
| Zinc and articles thereof | $19,549 | $188,643 | $48,511 | $194,363 | $70,646 | $19,457 | $4,317 |
| Tin and articles thereof | $28,388 | $41,733 | $16,647 | $22,242 | $3,633 | $10,081 | $14,098 |
| Other base metals; cermets; articles thereof | $69 | $307 | $762 | $221 | $1,113 | $331 | $118 |
| Tools, implements, cutlery, spoons and forks, of base metal | $2,594,241 | $3,023,682 | $3,626,580 | $4,148,631 | $2,735,732 | $3,031,780 | $3,634,969 |
| Miscellaneous articles of base metal | $3,136,342 | $4,517,578 | $4,473,889 | $6,012,493 | $3,893,272 | $3,809,028 | $5,694,136 |
| Total | $52,396,109 | $58,929,594 | $80,122,171 | $86,472,976 | $43,544,134 | $48,199,838 | $66,311,838 |
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