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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $10,606,538 | $2,943,341 | $1,835,351 | $2,814,416 | $1,000,566 | $1,273,034 | $2,273,557 |
| Articles of iron or steel | $12,729,800 | $11,184,281 | $12,379,315 | $11,589,461 | $6,015,359 | $7,224,308 | $8,143,058 |
| Copper and articles thereof | $157,264,916 | $107,732,984 | $46,522,906 | $21,264,026 | $12,440,465 | $26,064,256 | $20,255,835 |
| Nickel and articles thereof | $122 | $429 | $903 | $572 | | $710 | $426,315 |
| Aluminum and articles thereof | $46,158,886 | $29,716,657 | $2,821,312 | $2,083,187 | $2,894,714 | $2,493,385 | $1,442,795 |
| Lead and articles thereof | $2,170,736 | $3,549,334 | $8,086,657 | $8,759,449 | $5,679,461 | $9,003,591 | $5,093,155 |
| Zinc and articles thereof | $3,518,075 | $1,604,535 | $75,077 | $7,499 | | | |
| Tin and articles thereof | $1,690,231 | $548,964 | | | $21 | $35 | $149 |
| Other base metals; cermets; articles thereof | | | $94 | $18 | $459,131 | $470,042 | $9,042 |
| Tools, implements, cutlery, spoons and forks, of base metal | $570,350 | $2,789,195 | $4,117,166 | $4,920,693 | $3,103,109 | $3,427,442 | $9,337,739 |
| Miscellaneous articles of base metal | $2,562,292 | $3,524,915 | $2,642,198 | $2,292,075 | $2,425,688 | $4,527,450 | $5,053,384 |
| Total | $237,271,946 | $163,594,635 | $78,480,979 | $53,731,396 | $34,018,514 | $54,484,253 | $52,035,029 |
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