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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $4,486 | $37,107 | $30,399 | $24,072 | $25,885 | $24,681 |
| Articulated link chain other than roller chain, of iron/steel | $130 | $2,361 | $3,811 | $7,359 | $3,746 | $4,697 |
| Parts of articulated link chain of iron/steel | | | $50 | | | $62,033 |
| Skid chain of iron/steel | | | | | $362 | |
| Welded link chain of iron/steel | | | | $133 | $64 | $487 |
| Chain, of iron/steel, n.e.s. in 73.15 | | | $222 | $18 | | $1,556 |
| Total | $4,616 | $39,468 | $34,482 | $31,582 | $30,057 | $93,454 |
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