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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $240,659,293 | $166,986,621 | $243,178,676 | $214,422,866 | $93,108,367 | $129,437,149 | $133,339,479 |
| Articles of iron or steel | $4,318,515 | $1,945,151 | $4,373,080 | $2,369,236 | $2,383,099 | $3,255,620 | $1,896,423 |
| Copper and articles thereof | $46,924,579 | $77,183,464 | $74,707,005 | $68,881,853 | $65,276,961 | $99,676,211 | $120,414,216 |
| Aluminum and articles thereof | $4,436,878 | $7,824,842 | $42,592,323 | $40,603,738 | $60,281,867 | $83,311,162 | $91,330,389 |
| Lead and articles thereof | $25,710 | $178,815 | $185,705 | | $75,910 | $283,372 | $552,952 |
| Zinc and articles thereof | | $746 | | $50 | | | |
| Other base metals; cermets; articles thereof | $17,822,082 | $13,583,977 | $8,563 | $332 | $983 | $450 | |
| Tools, implements, cutlery, spoons and forks, of base metal | $731,566 | $162,628 | $318,733 | $244,714 | $96,836 | $175,568 | $136,403 |
| Miscellaneous articles of base metal | $77,695 | $130,532 | $227,783 | $272,627 | $108,094 | $286,557 | $777,254 |
| Total | $314,996,318 | $267,996,776 | $365,591,868 | $326,795,416 | $221,332,117 | $316,426,089 | $348,447,116 |
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