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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $348,737,446 | $302,923,125 | $269,008,316 | $331,104,728 | $307,712,306 | $248,082,839 | $280,624,676 |
| Articles of iron or steel | $508,113,859 | $552,972,580 | $671,750,486 | $837,327,380 | $548,913,949 | $621,610,267 | $724,709,166 |
| Copper and articles thereof | $10,087,865 | $9,491,261 | $12,999,878 | $17,718,507 | $9,924,925 | $22,035,481 | $19,177,869 |
| Nickel and articles thereof | $145,602 | $184,640 | $229,016 | $3,305 | $31,250 | $64,886 | $62,482 |
| Aluminum and articles thereof | $438,541,317 | $466,014,641 | $534,989,445 | $790,212,666 | $572,207,109 | $748,609,165 | $844,684,168 |
| Lead and articles thereof | $24,169,354 | $23,259,419 | $59,838,538 | $53,617,330 | $34,483,235 | $51,067,457 | $52,993,068 |
| Zinc and articles thereof | $15,568,752 | $65,697,015 | $63,479,022 | $38,804,980 | $21,986,597 | $17,450,405 | $18,664,725 |
| Tin and articles thereof | $30,511 | $9,973 | $18,171 | $21,080 | $24,536 | $24,051 | $4,571 |
| Other base metals; cermets; articles thereof | $2,573,969 | $1,812,145 | $2,657,436 | $2,866,314 | $752,648 | $2,297,847 | $2,609,294 |
| Tools, implements, cutlery, spoons and forks, of base metal | $32,200,227 | $29,722,707 | $40,323,106 | $35,883,885 | $29,353,062 | $32,003,377 | $42,202,885 |
| Miscellaneous articles of base metal | $29,930,524 | $38,577,638 | $42,888,147 | $54,350,385 | $43,024,954 | $50,769,259 | $50,695,878 |
| Total | $1,410,099,426 | $1,490,665,144 | $1,698,181,561 | $2,161,910,560 | $1,568,414,571 | $1,794,015,034 | $2,036,428,782 |
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