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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $21,326 | $168,299 | $375,365 | $568,853 | $1,546,479 | $800,280 |
| Articulated link chain other than roller chain, of iron/steel | $134,785 | $661,332 | $118,733 | $316,255 | $1,174,674 | $239,077 |
| Parts of articulated link chain of iron/steel | $6,533 | $14,564 | $70,320 | $189,433 | $752,866 | $145,269 |
| Skid chain of iron/steel | $410,270 | $10,845 | $6,060 | $492,705 | $75,456 | $76,929 |
| Stud-link chain of iron/steel | $43,560 | | $57,053 | $647,358 | $30,260 | $147,904 |
| Welded link chain of iron/steel | $18,125 | $713 | $30,889 | $111,787 | $185,087 | $287,181 |
| Chain, of iron/steel, n.e.s. in 73.15 | $23,675 | $87,789 | $133,498 | $371,054 | $404,229 | $164,279 |
| Parts of chains (excl. articulated link chain), of iron/steel | $161,987 | $18,122 | $2,571,732 | $208,619 | $56,226 | $217,837 |
| Total | $820,261 | $961,664 | $3,363,650 | $2,906,064 | $4,225,277 | $2,078,756 |
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