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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $253,582,862 | $323,639,860 | $470,869,965 | $574,847,780 | $237,404,142 | $449,031,071 | $686,779,536 |
| Articles of iron or steel | $263,751,373 | $352,149,070 | $448,602,383 | $406,639,296 | $180,384,971 | $239,705,614 | $370,585,824 |
| Copper and articles thereof | $18,619,604 | $41,535,251 | $44,566,374 | $53,289,076 | $30,649,307 | $36,606,086 | $64,968,825 |
| Nickel and articles thereof | $263,421 | $242,368 | $336,231 | $197,151 | $725,008 | $102,012 | $1,744,833 |
| Aluminum and articles thereof | $52,971,094 | $57,510,792 | $71,193,947 | $72,413,172 | $41,612,868 | $55,829,869 | $78,547,768 |
| Lead and articles thereof | $289,366 | $360,217 | $1,282,212 | $625,115 | $189,353 | $221,471 | $1,373,466 |
| Zinc and articles thereof | $2,627,604 | $3,461,155 | $4,622,875 | $3,804,964 | $1,423,998 | $1,147,672 | $1,075,230 |
| Tin and articles thereof | $213,719 | $1,023,682 | $771,580 | $1,167,846 | $427,382 | $327,902 | $770,918 |
| Other base metals; cermets; articles thereof | $912,401 | $890,847 | $1,508,060 | $1,529,842 | $897,945 | $1,006,954 | $2,282,682 |
| Tools, implements, cutlery, spoons and forks, of base metal | $35,729,116 | $48,107,549 | $61,455,968 | $52,556,747 | $23,655,119 | $37,974,052 | $46,239,146 |
| Miscellaneous articles of base metal | $54,666,219 | $63,292,022 | $79,091,085 | $70,491,248 | $40,760,953 | $50,851,806 | $65,866,435 |
| Total | $683,626,779 | $892,212,813 | $1,184,300,680 | $1,237,562,237 | $558,131,046 | $872,804,509 | $1,320,234,663 |
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