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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Roller chain of iron/steel | $121,611 | $216,760 | $258,109 | $160,658 | $288,145 |
| Articulated link chain other than roller chain, of iron/steel | $364,974 | $600,205 | $423,689 | $693,184 | $1,666,596 |
| Parts of articulated link chain of iron/steel | $43,844 | $398,617 | $239,962 | $1,145,361 | $454,073 |
| Skid chain of iron/steel | $39,333 | $234,122 | $17,528 | $213,835 | $43,981 |
| Stud-link chain of iron/steel | $182,466 | $735,024 | $129,525 | $80,770 | $724,486 |
| Welded link chain of iron/steel | $176,572 | $123,697 | $104,678 | $139,876 | $682,885 |
| Chain, of iron/steel, n.e.s. in 73.15 | $466,078 | $485,242 | $602,064 | $570,059 | $608,629 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,698,095 | $605,432 | $1,168,974 | $652,582 | $507,249 |
| Total | $4,092,973 | $3,399,099 | $2,944,529 | $3,656,325 | $4,976,044 |
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