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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $7,357,383 | $6,647,280 | $14,212,781 | $13,637,954 | $25,670,980 | $27,726,810 | $28,245,863 |
| Articles of iron or steel | $22,476,709 | $19,407,029 | $26,166,359 | $41,508,686 | $43,679,361 | $45,581,338 | $49,130,654 |
| Copper and articles thereof | $1,128,343 | $140,013 | $223,519 | $368,085 | $1,340,712 | $1,345,086 | $1,567,136 |
| Nickel and articles thereof | | | | | | $1,075 | $951 |
| Aluminum and articles thereof | $1,570,525 | $2,744,333 | $2,181,167 | $2,666,305 | $7,802,018 | $8,404,871 | $8,999,145 |
| Lead and articles thereof | $41,912 | $49,253 | $50,819 | $120,878 | $285,762 | $82,831 | $66,725 |
| Zinc and articles thereof | $144,013 | $42,312 | $38,557 | $22,889 | $171,501 | $18,278 | $9,182 |
| Tin and articles thereof | $20,692 | $13,565 | $32,016 | $50,259 | $17,404 | $48,176 | $56,958 |
| Other base metals; cermets; articles thereof | | $9,070 | $49,237 | $22,508 | $101,122 | $26,692 | $1,700 |
| Tools, implements, cutlery, spoons and forks, of base metal | $3,771,548 | $3,384,426 | $4,552,738 | $4,824,245 | $5,386,966 | $7,668,094 | $6,395,161 |
| Miscellaneous articles of base metal | $2,106,217 | $2,071,732 | $4,325,212 | $2,856,751 | $4,964,158 | $4,916,508 | $4,875,211 |
| Total | $38,617,342 | $34,509,013 | $51,832,405 | $66,078,560 | $89,419,984 | $95,819,759 | $99,348,686 |
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