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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $996,980,165 | $932,579,729 | $1,068,142,991 | $1,140,938,012 | $1,215,308,472 | $1,104,711,948 | $1,047,431,511 |
| Articles of iron or steel | $210,973,861 | $320,142,619 | $339,708,110 | $492,004,864 | $388,584,858 | $380,115,475 | $349,437,705 |
| Copper and articles thereof | $119,199,562 | $173,013,091 | $155,652,947 | $128,701,078 | $123,700,707 | $136,189,206 | $142,882,816 |
| Nickel and articles thereof | $14,837,448 | $13,142,352 | $13,534,963 | $12,748,169 | $11,632,666 | $11,991,807 | $13,344,116 |
| Aluminum and articles thereof | $176,772,532 | $205,367,190 | $240,625,536 | $176,496,636 | $192,753,499 | $209,763,628 | $198,967,317 |
| Lead and articles thereof | $16,754,683 | $19,962,971 | $35,787,568 | $46,449,340 | $38,151,184 | $54,322,977 | $70,993,335 |
| Zinc and articles thereof | $33,313,246 | $45,480,331 | $67,234,621 | $31,837,047 | $17,628,374 | $36,152,739 | $26,687,520 |
| Tin and articles thereof | $2,915,059 | $2,808,127 | $4,602,418 | $3,551,992 | $2,410,746 | $4,127,926 | $2,962,173 |
| Other base metals; cermets; articles thereof | $2,326,796 | $2,613,295 | $3,314,031 | $5,269,734 | $2,960,618 | $4,320,271 | $2,333,000 |
| Tools, implements, cutlery, spoons and forks, of base metal | $25,793,624 | $26,553,165 | $34,847,037 | $37,872,137 | $31,438,361 | $40,703,283 | $45,225,205 |
| Miscellaneous articles of base metal | $26,696,387 | $29,754,347 | $34,923,736 | $38,899,060 | $38,145,299 | $48,860,067 | $53,935,588 |
| Total | $1,626,563,363 | $1,771,417,217 | $1,998,373,958 | $2,114,768,069 | $2,062,714,784 | $2,031,259,327 | $1,954,200,286 |
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