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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $8,282,723 | $10,499,043 | $21,879,419 | $15,160,252 | $16,451,007 | $32,909,644 | $43,009,529 |
| Articles of iron or steel | $26,291,093 | $27,906,163 | $24,073,392 | $29,027,351 | $31,889,887 | $34,619,839 | $113,635,551 |
| Copper and articles thereof | $157,485 | $764,021 | $138,507 | $203,739 | $362,810 | $117,402 | $211,686 |
| Nickel and articles thereof | | $298 | $2,009 | | $23,722 | | |
| Aluminum and articles thereof | $657,218 | $1,389,157 | $1,121,577 | $753,036 | $611,355 | $630,314 | $1,394,025 |
| Lead and articles thereof | | $814 | | | $202,424 | | |
| Zinc and articles thereof | $230,523 | $204,975 | $81,559 | $55,781 | $190,495 | $422,828 | $784,192 |
| Tin and articles thereof | $16,012 | | | $81 | $2,327 | $11,669 | |
| Other base metals; cermets; articles thereof | | | $3,210 | | $7,446 | | $33,185 |
| Tools, implements, cutlery, spoons and forks, of base metal | $3,755,700 | $2,282,865 | $2,830,367 | $2,260,846 | $2,201,991 | $3,744,572 | $3,793,998 |
| Miscellaneous articles of base metal | $663,620 | $29,340,803 | $989,237 | $997,961 | $1,112,362 | $1,442,720 | $1,811,374 |
| Total | $40,054,374 | $72,388,139 | $51,119,277 | $48,459,047 | $53,055,826 | $73,898,988 | $164,673,540 |
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