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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $20,723,684 | $25,040,801 | $27,159,399 | $35,555,075 | $12,470,987 | $22,083,947 | $27,924,842 |
| Articles of iron or steel | $1,247,939 | $1,295,171 | $1,490,127 | $1,990,370 | $1,487,363 | $1,408,662 | $1,704,941 |
| Copper and articles thereof | $3,458,108 | $5,700,371 | $4,358,904 | $2,476,240 | $3,433,528 | $8,203,965 | $37,647,689 |
| Nickel and articles thereof | | | | | $7,187 | $575,148 | |
| Aluminum and articles thereof | $3,079,813 | $3,658,266 | $5,017,361 | $4,877,250 | $3,366,766 | $5,901,596 | $8,493,149 |
| Lead and articles thereof | | $15,465 | $116,467 | $5,164,869 | $176,280 | $472,928 | $191,019 |
| Zinc and articles thereof | $6,250 | $20,274 | $97,400 | $31,578 | $70,888 | $24,572 | $38,539 |
| Tin and articles thereof | | | | | | | $105 |
| Other base metals; cermets; articles thereof | | | $27,715 | $194,884 | | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $25,451 | $48,284 | $88,266 | $65,473 | $60,227 | $105,137 | $62,401 |
| Miscellaneous articles of base metal | $90,762 | $54,376 | $83,322 | $559,499 | $197,542 | $314,053 | $487,062 |
| Total | $28,632,007 | $35,833,008 | $38,438,961 | $50,915,238 | $21,270,768 | $39,090,008 | $76,549,747 |
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