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| Chapter | 2005 | 2007 | 2010 | 2011 |
| Iron and steel | $2,695,976 | $3,683,677 | $7,379,095 | $12,921,272 |
| Articles of iron or steel | $6,437,744 | $5,022,109 | $23,255,864 | $22,395,922 |
| Copper and articles thereof | $70,191 | $95,540 | $259,126 | $287,471 |
| Nickel and articles thereof | $2,107 | | $24,257 | |
| Aluminum and articles thereof | $850,228 | $1,386,340 | $4,590,538 | $3,798,330 |
| Lead and articles thereof | $3,945 | $16,699 | $38,074 | $6,034 |
| Zinc and articles thereof | $2,688,467 | $6,115,199 | $2,493,589 | $1,439,879 |
| Tin and articles thereof | $6,671 | $1,115 | | $2,733 |
| Other base metals; cermets; articles thereof | $842 | $12,041 | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $404,113 | $3,018,905 | $1,460,006 | $4,266,403 |
| Miscellaneous articles of base metal | $1,424,444 | $1,836,649 | $3,051,550 | $3,905,741 |
| Total | $14,584,728 | $21,188,274 | $42,552,099 | $49,023,785 |
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