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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $4,412,122 | $4,752,862 | $6,287,217 | $8,688,925 | $4,828,534 | $7,198,954 | $10,924,324 |
| Articulated link chain other than roller chain, of iron/steel | $861,682 | $1,055,331 | $945,451 | $1,449,488 | $623,449 | $1,309,379 | $2,616,771 |
| Parts of articulated link chain of iron/steel | $342,517 | $344,430 | $567,908 | $482,750 | $339,260 | $461,867 | $832,488 |
| Skid chain of iron/steel | $164,553 | $243,683 | $317,678 | $564,160 | $177,619 | $466,479 | $1,871,748 |
| Stud-link chain of iron/steel | $86,308 | $283,188 | $176,757 | $188,767 | $171,311 | $127,610 | $200,954 |
| Welded link chain of iron/steel | $2,539,572 | $3,219,501 | $6,678,161 | $8,884,400 | $3,077,436 | $5,350,697 | $7,088,171 |
| Chain, of iron/steel, n.e.s. in 73.15 | $1,134,935 | $2,124,961 | $3,815,465 | $4,360,902 | $795,598 | $1,384,640 | $1,944,423 |
| Parts of chains (excl. articulated link chain), of iron/steel | $789,856 | $1,040,857 | $1,445,282 | $1,653,941 | $707,496 | $1,451,322 | $1,687,237 |
| Total | $10,331,545 | $13,064,813 | $20,233,919 | $26,273,333 | $10,720,703 | $17,750,948 | $27,166,116 |
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