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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $98,629,052 | $139,245,952 | $200,325,077 | $338,566,666 | $90,029,346 | $221,248,233 | $275,088,632 |
| Articles of iron or steel | $117,276,071 | $180,403,359 | $232,034,688 | $288,792,378 | $206,739,263 | $290,027,192 | $488,731,002 |
| Copper and articles thereof | $46,311,063 | $133,803,396 | $124,159,921 | $146,324,435 | $50,842,448 | $126,885,187 | $161,345,271 |
| Nickel and articles thereof | $540,892 | $528,370 | $972,028 | $600,900 | $524,681 | $446,672 | $1,066,333 |
| Aluminum and articles thereof | $62,044,981 | $78,851,327 | $114,247,925 | $112,385,557 | $49,546,962 | $77,226,502 | $123,242,272 |
| Lead and articles thereof | $312,740 | $267,693 | $522,785 | $436,744 | $352,142 | $648,088 | $614,437 |
| Zinc and articles thereof | $7,133,991 | $31,868,670 | $25,943,211 | $22,136,468 | $6,124,028 | $14,814,065 | $13,738,729 |
| Tin and articles thereof | $192,704 | $162,641 | $188,368 | $237,960 | $129,001 | $265,774 | $337,061 |
| Other base metals; cermets; articles thereof | $5,764,161 | $10,648,989 | $14,672,366 | $9,936,620 | $7,208,248 | $3,947,209 | $10,621,044 |
| Tools, implements, cutlery, spoons and forks, of base metal | $36,593,434 | $39,830,040 | $45,762,714 | $57,874,072 | $36,241,781 | $56,782,632 | $65,496,559 |
| Miscellaneous articles of base metal | $43,323,041 | $51,618,610 | $58,009,761 | $69,772,180 | $40,952,821 | $65,787,668 | $86,955,260 |
| Total | $418,122,130 | $667,229,047 | $816,838,844 | $1,047,063,980 | $488,690,721 | $858,079,222 | $1,227,236,600 |
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