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| Commodity | 2005 | 2006 | 2007 | 2009 |
| Roller chain of iron/steel | $53,154 | $171,970 | $207,486 | $235,711 |
| Articulated link chain other than roller chain, of iron/steel | $867,594 | $903,526 | $1,048,873 | $729,165 |
| Parts of articulated link chain of iron/steel | $106,558 | $148,220 | $235,475 | $177,098 |
| Skid chain of iron/steel | $9,504 | $23,182 | $6,520 | $98,346 |
| Stud-link chain of iron/steel | $96,461 | $142,537 | $407,775 | $275,889 |
| Welded link chain of iron/steel | $119,095 | $314,234 | $234,988 | $208,894 |
| Chain, of iron/steel, n.e.s. in 73.15 | $408,520 | $798,511 | $404,518 | $379,209 |
| Parts of chains (excl. articulated link chain), of iron/steel | $102,948 | $121,380 | $73,719 | $157,686 |
| Total | $1,763,834 | $2,623,560 | $2,619,354 | $2,261,998 |
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