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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $234,149,390 | $304,443,924 | $409,635,987 | $427,983,309 | $143,509,745 | $219,148,554 | $300,551,718 |
| Articles of iron or steel | $303,728,802 | $356,705,326 | $446,882,324 | $449,961,913 | $263,576,474 | $312,406,964 | $423,044,961 |
| Copper and articles thereof | $26,315,639 | $42,431,917 | $49,528,189 | $51,933,385 | $25,522,532 | $40,264,117 | $55,766,118 |
| Nickel and articles thereof | $4,825,033 | $12,081,668 | $14,832,153 | $3,164,353 | $437,674 | $2,704,378 | $3,458,308 |
| Aluminum and articles thereof | $77,781,362 | $114,570,713 | $134,445,313 | $186,365,198 | $70,922,315 | $90,202,682 | $113,746,639 |
| Lead and articles thereof | $943,089 | $1,953,244 | $1,116,770 | $555,603 | $316,856 | $270,023 | $702,406 |
| Zinc and articles thereof | $13,864,327 | $24,638,266 | $18,450,792 | $18,910,732 | $3,209,677 | $15,684,214 | $23,626,596 |
| Tin and articles thereof | $573,590 | $881,267 | $1,086,692 | $1,583,140 | $580,185 | $1,151,098 | $1,787,314 |
| Other base metals; cermets; articles thereof | $3,431,277 | $3,761,517 | $5,080,787 | $3,948,281 | $3,659,891 | $4,447,084 | $6,298,672 |
| Tools, implements, cutlery, spoons and forks, of base metal | $39,749,728 | $48,317,018 | $65,221,701 | $65,727,542 | $37,025,852 | $49,076,344 | $62,513,594 |
| Miscellaneous articles of base metal | $65,144,760 | $74,937,826 | $93,158,948 | $85,726,439 | $60,697,095 | $73,350,097 | $84,949,453 |
| Total | $770,506,997 | $984,722,686 | $1,239,439,656 | $1,295,859,895 | $609,458,296 | $808,705,555 | $1,076,445,779 |
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