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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $3,828,391 | $6,112,295 | $6,128,640 | $5,796,810 | $5,232,731 | $5,707,820 |
| Articulated link chain other than roller chain, of iron/steel | $1,251,409 | $1,332,151 | $1,750,253 | $2,175,498 | $1,812,958 | $2,497,313 |
| Parts of articulated link chain of iron/steel | $461,936 | $169,903 | $387,686 | $1,173,555 | $1,144,170 | $1,927,776 |
| Skid chain of iron/steel | $370,315 | $531,505 | $816,187 | $954,167 | $2,618,258 | $3,626,744 |
| Stud-link chain of iron/steel | $30,359,095 | $69,823,143 | $36,027,416 | $55,972,181 | $51,840,685 | $19,173,235 |
| Welded link chain of iron/steel | $2,992,294 | $1,671,361 | $48,587,304 | $64,020,483 | $42,662,723 | $73,823,042 |
| Chain, of iron/steel, n.e.s. in 73.15 | $1,443,454 | $2,672,648 | $2,548,606 | $1,943,202 | $1,425,945 | $3,109,189 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,620,387 | $3,895,211 | $9,065,545 | $11,376,635 | $6,863,703 | $12,476,817 |
| Total | $43,327,281 | $86,208,217 | $105,311,637 | $143,412,531 | $113,601,173 | $122,341,936 |
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