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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $9,269,940 | $2,185,391 | $1,227,259 | $2,080,180 | $2,973,697 | $3,034,844 | $2,008,059 |
| Articulated link chain other than roller chain, of iron/steel | $1,103,545 | $1,327,880 | $1,734,715 | $2,572,837 | $1,246,715 | $1,913,471 | $2,294,994 |
| Parts of articulated link chain of iron/steel | $256,584 | $308,528 | $471,127 | $382,257 | $366,031 | $606,511 | $962,618 |
| Skid chain of iron/steel | $366,869 | $401,623 | $452,004 | $872,308 | $439,666 | $405,844 | $248,673 |
| Stud-link chain of iron/steel | $48,146 | $876,482 | $85,178 | $86,792 | $333,102 | $82,724 | $131,658 |
| Welded link chain of iron/steel | $1,512,153 | $1,446,297 | $1,781,526 | $2,746,107 | $1,505,677 | $2,081,004 | $3,163,291 |
| Chain, of iron/steel, n.e.s. in 73.15 | $1,329,607 | $1,360,548 | $2,174,542 | $2,207,003 | $2,970,987 | $1,188,546 | $1,523,510 |
| Parts of chains (excl. articulated link chain), of iron/steel | $965,957 | $752,924 | $1,150,708 | $665,303 | $626,713 | $568,579 | $4,146,511 |
| Total | $14,852,801 | $8,659,673 | $9,077,059 | $11,612,787 | $10,462,588 | $9,881,523 | $14,479,314 |
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