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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $28,153,650 | $27,653,204 | $33,286,386 | $54,076,230 | $33,243,137 | $38,187,617 | $39,450,902 |
| Articles of iron or steel | $56,784,406 | $69,207,000 | $68,427,093 | $82,091,402 | $87,727,754 | $136,661,705 | $82,071,664 |
| Copper and articles thereof | $2,294,621 | $3,163,582 | $2,971,111 | $2,928,196 | $2,509,487 | $3,019,457 | $2,627,677 |
| Nickel and articles thereof | $5,827 | $38,699 | $2,141 | $1,209 | $507,243 | $4,893 | $80,131 |
| Aluminum and articles thereof | $15,684,145 | $16,710,996 | $17,023,546 | $19,884,046 | $18,208,159 | $20,788,106 | $21,319,873 |
| Lead and articles thereof | $101,760 | $5,792,860 | $116,036 | $93,921 | $101,481 | $138,702 | $87,504 |
| Zinc and articles thereof | $45,998 | $84,859 | $36,095 | $85,987 | $75,490 | $159,031 | $125,190 |
| Tin and articles thereof | $12,520 | $15,299 | $37,456 | $24,815 | $37,132 | $67,638 | $52,336 |
| Other base metals; cermets; articles thereof | $32,476 | $16,369 | $62,906 | $136,827 | $273,128 | $157,039 | $264,045 |
| Tools, implements, cutlery, spoons and forks, of base metal | $8,763,276 | $9,050,608 | $9,826,035 | $13,784,195 | $11,871,201 | $11,992,402 | $14,244,392 |
| Miscellaneous articles of base metal | $7,819,830 | $8,930,153 | $9,423,173 | $12,753,565 | $11,269,161 | $12,665,527 | $13,454,838 |
| Total | $119,698,509 | $140,663,629 | $141,211,978 | $185,860,393 | $165,823,373 | $223,842,117 | $173,778,552 |
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