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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $112,211,947 | $135,124,365 | $179,715,781 | $145,275,234 | $38,388,457 | $43,864,284 | $79,887,512 |
| Articles of iron or steel | $50,374,517 | $103,805,836 | $95,082,559 | $99,539,513 | $48,513,534 | $41,602,253 | $56,008,691 |
| Copper and articles thereof | $13,631,957 | $22,891,743 | $24,620,583 | $26,580,106 | $10,811,213 | $7,593,598 | $3,844,319 |
| Nickel and articles thereof | $39,819 | $17,651 | $239,750 | $137,261 | $148,223 | | |
| Aluminum and articles thereof | $4,964,246 | $28,988,082 | $16,172,531 | $30,319,034 | $15,560,173 | $7,692,949 | $9,201,444 |
| Lead and articles thereof | $80,094 | $102,566 | $101,086 | $88,645 | $47,490 | | |
| Zinc and articles thereof | $60,663 | $129 | $316,887 | $8,449 | $128 | | |
| Tin and articles thereof | $205,023 | $233,592 | $401,265 | $405,470 | $294,270 | $257,417 | $253,944 |
| Other base metals; cermets; articles thereof | $4,505 | $9 | $31,687 | $449 | $1,393 | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $4,973,483 | $10,853,111 | $13,786,087 | $11,331,969 | $13,436,231 | $10,322,187 | $13,414,005 |
| Miscellaneous articles of base metal | $5,614,702 | $10,810,952 | $13,820,635 | $9,260,479 | $7,982,939 | $6,028,176 | $7,903,327 |
| Total | $192,160,956 | $312,828,036 | $344,288,851 | $322,946,609 | $135,184,051 | $117,360,864 | $170,513,242 |
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