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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $8,664,129 | $9,298,014 | $11,725,185 | $15,284,899 | $10,121,442 | $16,213,171 | $25,026,207 |
| Articulated link chain other than roller chain, of iron/steel | $4,719,533 | $5,372,876 | $6,407,100 | $7,411,670 | $5,644,670 | $9,419,539 | $11,312,527 |
| Parts of articulated link chain of iron/steel | $1,496,963 | $1,393,651 | $1,905,804 | $1,342,531 | $798,877 | $1,397,666 | $1,997,316 |
| Skid chain of iron/steel | $599,363 | $1,046,398 | $847,385 | $1,208,632 | $713,195 | $655,840 | $343,159 |
| Stud-link chain of iron/steel | $345,794 | $47,856 | $143,084 | $103,635 | $112,705 | $206,993 | $406,703 |
| Welded link chain of iron/steel | $987,857 | $1,268,988 | $1,878,485 | $2,156,892 | $1,272,630 | $1,932,498 | $3,132,759 |
| Chain, of iron/steel, n.e.s. in 73.15 | $669,645 | $796,008 | $957,038 | $1,011,632 | $866,306 | $1,859,403 | $2,357,433 |
| Parts of chains (excl. articulated link chain), of iron/steel | $296,054 | $368,411 | $476,637 | $598,277 | $448,125 | $382,775 | $780,376 |
| Total | $17,779,338 | $19,592,202 | $24,340,718 | $29,118,168 | $19,977,950 | $32,067,885 | $45,356,480 |
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