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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $2,357,113 | $4,482,786 | $5,056,756 | $5,957,662 | $4,329,331 | $5,036,892 | $7,367,844 |
| Articulated link chain other than roller chain, of iron/steel | $164,165 | $233,463 | $545,061 | $395,824 | $343,383 | $250,763 | $506,074 |
| Parts of articulated link chain of iron/steel | $1,849,041 | $1,245,652 | $1,202,768 | $1,617,293 | $435,990 | $237,506 | $323,333 |
| Skid chain of iron/steel | $291 | $7,547 | $60,152 | $65 | $15 | $9,666 | $28,217 |
| Stud-link chain of iron/steel | $26,613 | $9,170 | $32,017 | $20,374 | $6,430 | $86,202 | $135,188 |
| Welded link chain of iron/steel | $6,095,335 | $6,638,022 | $6,803,303 | $6,037,760 | $3,154,998 | $1,795,799 | $1,317,417 |
| Chain, of iron/steel, n.e.s. in 73.15 | $190,552 | $149,599 | $226,286 | $162,821 | $211,116 | $225,304 | $197,569 |
| Parts of chains (excl. articulated link chain), of iron/steel | $70,303 | $101,646 | $131,466 | $14,300 | $45,120 | $32,469 | $21,367 |
| Total | $10,753,413 | $12,867,885 | $14,057,809 | $14,206,099 | $8,526,383 | $7,674,601 | $9,897,009 |
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