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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $79,591,525 | $113,506,327 | $154,410,483 | $208,339,844 | $88,484,398 | $138,444,665 | $259,234,507 |
| Articles of iron or steel | $217,210,492 | $301,460,403 | $372,223,863 | $449,484,149 | $337,109,295 | $311,957,967 | $421,729,440 |
| Copper and articles thereof | $23,400,030 | $56,258,868 | $71,708,839 | $66,596,016 | $41,552,109 | $71,238,723 | $87,535,354 |
| Nickel and articles thereof | $143,158 | $240,713 | $239,057 | $423,297 | $449,462 | $756,535 | $1,179,118 |
| Aluminum and articles thereof | $176,750,557 | $231,350,131 | $292,199,955 | $305,117,025 | $208,799,041 | $265,187,463 | $322,323,015 |
| Lead and articles thereof | $584,112 | $1,123,183 | $6,126,281 | $3,851,934 | $1,632,181 | $3,154,250 | $3,957,045 |
| Zinc and articles thereof | $559,315 | $1,689,197 | $2,541,051 | $1,455,611 | $1,056,986 | $1,109,685 | $1,229,517 |
| Tin and articles thereof | $51,566 | $57,771 | $148,381 | $275,186 | $98,817 | $84,117 | $45,344 |
| Other base metals; cermets; articles thereof | $18,565 | $117,599 | $94,250 | $91,306 | $69,114 | $245,433 | $225,193 |
| Tools, implements, cutlery, spoons and forks, of base metal | $15,967,473 | $17,099,765 | $19,830,599 | $20,001,580 | $14,453,005 | $16,256,274 | $20,068,004 |
| Miscellaneous articles of base metal | $22,376,647 | $27,042,520 | $36,138,283 | $40,677,010 | $32,847,388 | $32,897,979 | $38,092,240 |
| Total | $536,653,440 | $749,946,477 | $955,661,042 | $1,096,312,958 | $726,551,796 | $841,333,091 | $1,155,618,777 |
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