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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $211,354,390 | $333,132,899 | $468,763,874 | $474,412,163 | $170,671,000 | $212,920,540 | $326,272,764 |
| Articles of iron or steel | $361,792,592 | $453,057,025 | $666,495,057 | $640,176,988 | $315,742,929 | $362,360,253 | $493,018,442 |
| Copper and articles thereof | $32,793,021 | $54,994,760 | $60,108,303 | $54,312,659 | $20,279,211 | $32,491,902 | $75,687,315 |
| Nickel and articles thereof | $313,852 | $346,169 | $374,106 | $1,044,551 | $717,356 | $925,701 | $1,676,838 |
| Aluminum and articles thereof | $65,065,680 | $84,928,662 | $120,145,255 | $109,129,651 | $58,989,562 | $72,800,067 | $102,124,690 |
| Lead and articles thereof | $610,297 | $1,027,610 | $2,724,604 | $2,056,775 | $4,903,942 | $7,438,360 | $11,567,422 |
| Zinc and articles thereof | $1,268,519 | $3,820,466 | $3,846,888 | $2,048,059 | $1,041,540 | $1,713,612 | $3,319,511 |
| Tin and articles thereof | $388,596 | $276,715 | $300,185 | $354,560 | $372,767 | $288,472 | $417,786 |
| Other base metals; cermets; articles thereof | $2,002,040 | $2,296,198 | $2,507,905 | $2,118,444 | $1,078,493 | $1,874,086 | $2,291,167 |
| Tools, implements, cutlery, spoons and forks, of base metal | $42,508,787 | $54,175,773 | $68,117,335 | $74,248,742 | $40,105,705 | $51,622,084 | $61,552,400 |
| Miscellaneous articles of base metal | $117,531,837 | $148,421,644 | $177,681,542 | $166,903,009 | $115,229,320 | $130,872,761 | $156,904,740 |
| Total | $835,629,611 | $1,136,477,921 | $1,571,065,054 | $1,526,805,601 | $729,131,825 | $875,307,838 | $1,234,833,075 |
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