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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $5,597,425 | $7,960,140 | $13,460,185 | $15,901,325 | $7,747,748 | $7,349,513 | $12,095,795 |
| Articles of iron or steel | $12,493,840 | $19,360,952 | $23,940,942 | $34,779,823 | $21,197,234 | $25,059,569 | $35,182,185 |
| Copper and articles thereof | $324,019 | $587,438 | $564,575 | $915,355 | $670,165 | $712,985 | $842,264 |
| Nickel and articles thereof | $511 | | | | | $1,908 | |
| Aluminum and articles thereof | $3,370,076 | $3,988,627 | $5,232,804 | $6,737,167 | $5,609,946 | $6,943,321 | $5,418,499 |
| Lead and articles thereof | $3,562 | $6,313 | $3,450 | $13,234 | $11,075 | $26,713 | $14,594 |
| Zinc and articles thereof | $21,836 | $50,785 | $38,700 | $33,023 | $38,911 | $87,728 | $1,905 |
| Tin and articles thereof | $1,683 | $4,202 | $28,813 | $8,947 | $13,315 | $3,944 | $4,166 |
| Other base metals; cermets; articles thereof | | $166 | $19,587 | | | $221 | $1,036 |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,256,604 | $1,583,934 | $1,956,898 | $2,557,587 | $1,932,091 | $2,157,107 | $2,606,301 |
| Miscellaneous articles of base metal | $2,468,535 | $3,264,543 | $3,085,274 | $3,843,622 | $3,148,481 | $2,786,788 | $3,848,112 |
| Total | $25,538,091 | $36,807,100 | $48,331,228 | $64,790,083 | $40,368,966 | $45,129,797 | $60,014,857 |
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