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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $210,579,075 | $187,063,490 | $262,821,853 | $255,499,162 | $239,616,808 | $182,056,964 | $256,704,419 |
| Articles of iron or steel | $501,587,750 | $548,370,664 | $642,205,169 | $1,234,318,413 | $900,801,426 | $628,983,507 | $805,119,015 |
| Copper and articles thereof | $101,954,239 | $155,393,673 | $204,560,628 | $336,797,102 | $166,030,701 | $181,970,216 | $142,705,601 |
| Nickel and articles thereof | $5,443,559 | $7,752,705 | $8,020,288 | $8,694,375 | $3,859,918 | $3,809,678 | $4,844,776 |
| Aluminum and articles thereof | $93,074,188 | $96,155,231 | $109,116,652 | $162,567,758 | $119,764,204 | $103,361,752 | $101,678,145 |
| Lead and articles thereof | $12,097,011 | $10,636,789 | $15,254,043 | $25,199,579 | $15,426,900 | $17,720,269 | $20,721,104 |
| Zinc and articles thereof | $23,684,104 | $38,000,367 | $49,485,593 | $61,288,217 | $36,904,293 | $31,283,148 | $30,234,811 |
| Tin and articles thereof | $7,045,481 | $5,161,016 | $5,352,887 | $8,278,655 | $4,233,575 | $1,957,115 | $10,546,105 |
| Other base metals; cermets; articles thereof | $8,207,902 | $8,732,515 | $12,977,202 | $14,904,783 | $7,018,514 | $6,198,938 | $6,826,124 |
| Tools, implements, cutlery, spoons and forks, of base metal | $103,411,118 | $117,274,956 | $167,237,344 | $388,154,337 | $325,141,221 | $174,734,154 | $246,168,902 |
| Miscellaneous articles of base metal | $72,450,349 | $81,665,198 | $106,693,577 | $237,013,639 | $174,681,222 | $97,050,939 | $79,580,799 |
| Total | $1,139,534,776 | $1,256,206,604 | $1,583,725,236 | $2,732,716,020 | $1,993,478,782 | $1,429,126,680 | $1,705,129,801 |
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