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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $73,015,696 | $73,038,357 | $65,330,860 | $87,670,408 | $74,147,190 | $86,691,670 |
| Articles of iron or steel | $28,881,327 | $44,106,866 | $51,031,207 | $63,970,137 | $52,510,996 | $55,938,635 |
| Copper and articles thereof | $8,452,840 | $18,517,684 | $29,402,607 | $32,305,826 | $23,096,351 | $28,381,325 |
| Nickel and articles thereof | $121,883 | $518,747 | $36,490 | $7,681 | $153 | $307,083 |
| Aluminum and articles thereof | $22,735,452 | $30,906,921 | $33,892,629 | $37,197,684 | $25,793,524 | $23,511,454 |
| Lead and articles thereof | $87,881 | $1,065,221 | $3,702,047 | $3,051,115 | $974,792 | $5,435,808 |
| Zinc and articles thereof | $1,084,640 | $2,060,800 | $2,613,143 | $1,093,323 | $1,137,166 | $1,297,468 |
| Tin and articles thereof | $172,627 | $67,047 | $36,552 | $50,093 | $19,998 | $51,502 |
| Other base metals; cermets; articles thereof | $20,274 | $17,645 | $135,105 | $8,764 | $8,405 | $12,347 |
| Tools, implements, cutlery, spoons and forks, of base metal | $5,280,359 | $6,826,157 | $6,454,757 | $4,658,367 | $3,852,120 | $4,509,754 |
| Miscellaneous articles of base metal | $6,988,469 | $9,059,798 | $10,341,735 | $15,490,449 | $18,420,708 | $19,602,864 |
| Total | $146,841,448 | $186,185,243 | $202,977,132 | $245,503,847 | $199,961,403 | $225,739,910 |
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