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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $81,583,155 | $97,413,711 | $132,647,243 | $223,740,691 | $186,904,506 | $211,499,618 | $279,425,689 |
| Articles of iron or steel | $72,988,789 | $116,115,552 | $133,075,375 | $180,756,159 | $174,409,949 | $190,497,451 | $269,526,063 |
| Copper and articles thereof | $4,543,934 | $6,535,625 | $7,752,428 | $8,981,207 | $7,903,609 | $11,961,805 | $16,333,574 |
| Nickel and articles thereof | $42,581 | $32,477 | $109,754 | $22,211 | $57,455 | $101,297 | $127,592 |
| Aluminum and articles thereof | $18,016,578 | $18,980,646 | $22,753,887 | $32,150,221 | $24,126,087 | $23,537,056 | $31,109,729 |
| Lead and articles thereof | $123,812 | $85,646 | $45,509 | $139,870 | $848,036 | $45,126 | $190,220 |
| Zinc and articles thereof | $397,472 | $446,713 | $943,014 | $1,576,223 | $2,277,998 | $1,184,708 | $1,502,588 |
| Tin and articles thereof | $15,663 | $168,487 | $1,059,558 | $1,475,519 | $170,324 | $188,272 | $30,129 |
| Other base metals; cermets; articles thereof | $31,157 | $52,067 | $141,211 | $172,560 | $251,875 | $519,297 | $504,164 |
| Tools, implements, cutlery, spoons and forks, of base metal | $9,424,471 | $11,004,954 | $14,565,957 | $18,652,869 | $16,000,533 | $24,481,763 | $32,821,445 |
| Miscellaneous articles of base metal | $9,791,818 | $11,847,102 | $16,963,348 | $24,473,710 | $20,433,081 | $26,731,247 | $32,392,812 |
| Total | $196,959,430 | $262,682,980 | $330,057,284 | $492,141,240 | $433,383,453 | $490,747,640 | $663,964,005 |
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