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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $146,672,797 | $128,904,561 | $252,871,212 | $281,617,692 | $269,036,267 | $202,668,165 | $290,149,775 |
| Articles of iron or steel | $127,161,157 | $127,473,375 | $175,109,000 | $229,479,615 | $342,835,210 | $339,583,380 | $207,924,191 |
| Copper and articles thereof | $3,354,887 | $4,458,736 | $11,579,109 | $10,022,825 | $19,116,824 | $16,187,680 | $19,591,279 |
| Nickel and articles thereof | $71,367 | $44,398 | $48,259 | $48,242 | $64,292 | $11,675 | $14,574 |
| Aluminum and articles thereof | $21,601,152 | $18,718,827 | $39,244,872 | $54,952,367 | $44,570,475 | $29,049,501 | $38,076,080 |
| Lead and articles thereof | $872,723 | $1,590,531 | $1,069,597 | $945,079 | $266,658 | $610,866 | $569,403 |
| Zinc and articles thereof | $12,459,710 | $13,423,536 | $26,561,984 | $12,657,241 | $4,910,897 | $11,483,343 | $22,587,985 |
| Tin and articles thereof | $385,190 | $16,082 | $96,599 | $8,330 | $929,140 | $24,805 | $854,911 |
| Other base metals; cermets; articles thereof | $4,519 | $28,659 | $3,379 | $10,040 | $7,195 | $12,966 | $31,336 |
| Tools, implements, cutlery, spoons and forks, of base metal | $16,050,434 | $21,586,822 | $21,102,628 | $21,430,910 | $20,317,710 | $28,774,565 | $36,575,887 |
| Miscellaneous articles of base metal | $14,271,442 | $19,460,673 | $20,929,252 | $31,791,551 | $41,387,261 | $35,386,897 | $39,691,696 |
| Total | $342,905,378 | $335,706,200 | $548,615,891 | $642,963,892 | $743,441,929 | $663,793,843 | $656,067,117 |
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