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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $1,126,726 | $3,354,672 | $4,315,562 | $9,641,695 | $3,525,319 | | $4,294,271 |
| Articles of iron or steel | $7,483,003 | $7,322,779 | $8,827,370 | $10,987,182 | $6,714,637 | $1,299,364 | |
| Copper and articles thereof | $37,556,184 | $48,644,493 | $55,495,442 | $46,772,044 | $33,330,160 | | |
| Nickel and articles thereof | | $30,807 | $2,515 | $135,084 | $30,352 | | |
| Aluminum and articles thereof | $958,252 | $1,025,307 | $2,405,843 | $1,602,159 | $947,590 | | $2,175,038 |
| Lead and articles thereof | $347 | | $62,541 | | | | |
| Zinc and articles thereof | $122 | $750 | | $1,242 | $1,443 | | |
| Tin and articles thereof | $160,628 | $96,951 | $81,639 | $195,806 | $209,057 | $37,965 | |
| Other base metals; cermets; articles thereof | $5,483 | | | | | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $454,139 | $538,285 | $685,555 | $996,103 | $1,708,913 | | $876,945 |
| Miscellaneous articles of base metal | $1,001,120 | $1,287,615 | $1,537,504 | $1,187,366 | $977,991 | | $497,994 |
| Total | $48,746,004 | $62,301,659 | $73,413,971 | $71,518,681 | $47,445,462 | $1,337,329 | $7,844,248 |
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