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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $7,918,015 | $11,546,381 | $10,168,385 | $18,284,592 | $7,529,202 | $10,817,411 | $18,106,251 |
| Articles of iron or steel | $11,138,392 | $13,072,026 | $10,141,289 | $12,756,300 | $12,611,242 | $12,820,578 | $12,675,125 |
| Copper and articles thereof | $739,192 | $1,129,859 | $2,573,122 | $3,677,926 | $1,973,183 | $1,665,864 | $3,580,061 |
| Nickel and articles thereof | $154 | | $229 | | $166 | $546 | $149 |
| Aluminum and articles thereof | $8,378,596 | $10,699,410 | $9,066,678 | $12,028,430 | $11,557,351 | $8,043,550 | $8,733,831 |
| Lead and articles thereof | $93,818 | $77,067 | $40,142 | $1,744 | $32,860 | $2,309 | |
| Zinc and articles thereof | $385,317 | $751,642 | $352,099 | $103,500 | $215,915 | $405,115 | $223,276 |
| Tin and articles thereof | $380 | $26,528 | | $600 | $29,122 | | |
| Other base metals; cermets; articles thereof | | | | | | | $3,341 |
| Tools, implements, cutlery, spoons and forks, of base metal | $979,222 | $787,909 | $520,892 | $817,609 | $886,338 | $1,232,359 | $691,725 |
| Miscellaneous articles of base metal | $1,352,397 | $1,032,158 | $1,325,510 | $1,464,248 | $1,133,761 | $1,504,015 | $847,347 |
| Total | $30,985,483 | $39,122,980 | $34,188,346 | $49,134,949 | $35,969,140 | $36,491,747 | $44,861,106 |
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