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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $743,432,271 | $983,274,998 | $1,316,204,334 | $2,638,025,296 | $1,848,506,865 | $1,426,888,110 | $2,275,201,189 |
| Articles of iron or steel | $808,731,887 | $1,605,513,884 | $1,391,947,341 | $2,557,993,627 | $3,390,601,634 | $3,581,166,475 | $2,552,790,784 |
| Copper and articles thereof | $85,382,767 | $140,579,114 | $204,793,558 | $265,064,813 | $177,552,307 | $263,724,706 | $348,016,984 |
| Nickel and articles thereof | $953,800 | $327,970 | $1,213,940 | $1,400,816 | $591,187 | $415,350 | $896,266 |
| Aluminum and articles thereof | $126,744,262 | $164,077,174 | $201,365,464 | $269,103,967 | $240,058,739 | $272,788,216 | $332,892,734 |
| Lead and articles thereof | $9,938,040 | $7,186,352 | $9,917,443 | $12,813,412 | $10,665,975 | $14,550,620 | $10,079,674 |
| Zinc and articles thereof | $1,707,078 | $1,388,747 | $1,588,504 | $3,529,559 | $2,097,402 | $1,701,775 | $2,989,422 |
| Tin and articles thereof | $997,191 | $626,097 | $4,240,054 | $763,832 | $1,358,102 | $1,214,743 | $1,071,460 |
| Other base metals; cermets; articles thereof | $248,361 | $896,936 | $441,467 | $1,407,366 | $1,981,241 | $1,716,044 | $891,004 |
| Tools, implements, cutlery, spoons and forks, of base metal | $49,368,134 | $49,905,925 | $55,342,756 | $71,292,094 | $60,724,639 | $78,055,930 | $83,494,185 |
| Miscellaneous articles of base metal | $48,695,366 | $59,016,922 | $68,395,462 | $85,202,627 | $99,192,932 | $120,401,472 | $127,076,119 |
| Total | $1,876,199,157 | $3,012,794,119 | $3,255,450,323 | $5,906,597,409 | $5,833,331,023 | $5,762,623,441 | $5,735,399,821 |
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