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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $25,916,398 | $21,447,719 | $37,707,483 | $42,887,955 | $19,555,318 | $75,603,944 | $94,200,797 |
| Articles of iron or steel | $3,458,198 | $18,044,985 | $9,589,557 | $157,594,604 | $79,816,676 | $10,229,833 | $9,700,557 |
| Copper and articles thereof | $6,246,977 | $11,903,141 | $11,973,776 | $8,290,161 | $3,842,988 | $8,762,918 | $10,509,723 |
| Nickel and articles thereof | | $1,600 | | | | | |
| Aluminum and articles thereof | $53,586,498 | $71,317,270 | $91,682,149 | $122,230,053 | $12,035,213 | $2,672,017 | $12,688,426 |
| Lead and articles thereof | $8,400 | $171,362 | $673,435 | $725,200 | $951,825 | $2,032,905 | $3,342,730 |
| Zinc and articles thereof | | $9,200 | | $32,152 | $12,000 | $273,710 | $92,375 |
| Tin and articles thereof | | | | | $5 | | |
| Other base metals; cermets; articles thereof | $21,000 | | | | | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $160,455 | $613,154 | $253,467 | $334,462 | $747,401 | $120,993 | $385,900 |
| Miscellaneous articles of base metal | $187,003 | $28,734 | $296,143 | $283,210 | $185,274 | $111,839 | $154,819 |
| Total | $89,584,929 | $123,537,165 | $152,176,010 | $332,377,797 | $117,146,700 | $99,808,159 | $131,075,327 |
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