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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $64,784,530 | $72,844,736 | $86,710,888 | $137,501,023 | $94,863,140 | $104,770,805 | $117,369,303 |
| Articles of iron or steel | $47,358,689 | $44,200,548 | $50,507,427 | $85,169,795 | $64,968,860 | $93,436,753 | $88,631,834 |
| Copper and articles thereof | $2,135,142,166 | $3,574,183,736 | $2,986,843,552 | $3,162,354,188 | $2,218,289,964 | $3,110,341,869 | $3,396,341,447 |
| Nickel and articles thereof | $3,946 | $8,621 | $6,111 | $46,811 | $21,876 | | $2,784 |
| Aluminum and articles thereof | $9,185,283 | $16,089,559 | $15,830,794 | $13,156,214 | $13,067,275 | $24,331,157 | $33,303,489 |
| Lead and articles thereof | $125,202,637 | $159,078,837 | $308,728,200 | $264,205,095 | $48,991,329 | $26,356,322 | $24,533,872 |
| Zinc and articles thereof | $208,931,883 | $443,557,487 | $435,854,897 | $328,527,188 | $213,247,286 | $389,097,640 | $623,427,602 |
| Tin and articles thereof | $208,467,962 | $268,625,112 | $595,492,718 | $434,760,082 | $260,969,294 | $283,711,177 | $137,339,900 |
| Other base metals; cermets; articles thereof | $9,204,346 | $12,419,819 | $33,591,499 | $29,223,825 | $7,951,535 | $1,377,417 | $1,755,034 |
| Tools, implements, cutlery, spoons and forks, of base metal | $4,124,082 | $1,400,241 | $1,708,341 | $2,200,459 | $1,676,331 | $3,485,813 | $3,317,627 |
| Miscellaneous articles of base metal | $5,780,631 | $11,131,223 | $15,403,737 | $19,111,875 | $14,308,797 | $20,940,413 | $28,543,825 |
| Total | $2,818,186,155 | $4,603,539,919 | $4,530,678,164 | $4,476,256,555 | $2,938,355,687 | $4,057,849,366 | $4,454,566,717 |
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