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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $6,240,514 | $12,823,572 | $13,593,924 | $11,721,051 | $11,371,265 | $13,986,655 | $22,225,966 |
| Articles of iron or steel | $11,503,882 | $5,786,592 | $6,446,407 | $11,347,877 | $9,896,379 | $15,818,711 | $12,536,263 |
| Copper and articles thereof | $459,955,079 | $619,781,587 | $127,727,501 | $13,165,056 | $3,323,456 | $3,088,106 | $6,995,097 |
| Nickel and articles thereof | $4,954 | $340 | $788,086,879 | $678,759,014 | $425,023,319 | $512,469,790 | $354,580,405 |
| Aluminum and articles thereof | $412,898 | $749,817 | $890,903 | $996,072 | $694,886 | $981,791 | $1,356,638 |
| Lead and articles thereof | $58,439 | $270,614 | $869,091 | $715,471 | $616,376 | $1,371,272 | $1,565,544 |
| Zinc and articles thereof | $38,562 | $26,253 | $4,720 | $153,305 | $7,836 | $8,152 | $5,247 |
| Tin and articles thereof | $390 | | $299 | $1,694 | $4,466 | $173 | $10,981 |
| Other base metals; cermets; articles thereof | $18,360 | $5,208 | $3,083 | $34,137 | $13,216 | $44,278 | $243,902 |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,164,314 | $1,420,689 | $895,668 | $1,711,609 | $957,018 | $983,532 | $829,338 |
| Miscellaneous articles of base metal | $533,784 | $436,374 | $459,471 | $709,882 | $383,805 | $491,427 | $420,532 |
| Total | $479,931,176 | $641,301,046 | $938,977,946 | $719,315,168 | $452,292,022 | $549,243,887 | $400,769,913 |
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