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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $150,206,942 | $176,338,488 | $284,374,764 | $401,843,088 | $141,357,017 | $184,056,667 | $151,503,342 |
| Articles of iron or steel | $93,918,160 | $120,655,195 | $160,804,866 | $187,800,704 | $135,537,220 | $172,535,267 | $152,141,191 |
| Copper and articles thereof | $18,611,761 | $22,709,506 | $27,394,390 | $33,021,310 | $19,923,079 | $18,468,254 | $18,456,198 |
| Nickel and articles thereof | $60,112 | $69,748 | $69,372 | $83,825 | $59,811 | $85,827 | $23,737 |
| Aluminum and articles thereof | $59,355,281 | $78,515,479 | $91,167,761 | $98,866,913 | $67,013,091 | $69,590,976 | $63,703,969 |
| Lead and articles thereof | $563,013 | $640,123 | $1,027,699 | $1,240,474 | $511,997 | $553,109 | $242,854 |
| Zinc and articles thereof | $354,856 | $986,264 | $975,040 | $578,825 | $420,789 | $504,242 | $728,357 |
| Tin and articles thereof | $109,150 | $53,817 | $33,784 | $52,408 | $108,851 | $36,368 | $61,383 |
| Other base metals; cermets; articles thereof | $36,747 | $32,332 | $25,453 | $151,585 | $166,777 | $39,124 | $9,203 |
| Tools, implements, cutlery, spoons and forks, of base metal | $20,747,872 | $20,928,042 | $26,897,728 | $33,766,940 | $26,567,343 | $30,742,636 | $26,063,583 |
| Miscellaneous articles of base metal | $26,515,433 | $28,460,221 | $39,202,110 | $47,834,189 | $36,414,467 | $34,756,355 | $31,697,203 |
| Total | $370,479,327 | $449,389,215 | $631,972,967 | $805,240,261 | $428,080,442 | $511,368,825 | $444,631,020 |
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