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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $1,207,463 | $1,012,930 | $1,546,862 | $1,384,457 | $964,795 | $1,628,978 | $2,042,257 |
| Articulated link chain other than roller chain, of iron/steel | $174,682 | $145,735 | $262,224 | $245,367 | $189,497 | $293,991 | $596,201 |
| Parts of articulated link chain of iron/steel | $25,022 | $62,006 | $77,113 | $91,874 | $41,290 | $72,863 | $191,667 |
| Skid chain of iron/steel | $254,150 | $269,824 | $1,535,334 | $3,274,425 | $1,520,081 | $2,513,882 | $6,219,747 |
| Stud-link chain of iron/steel | $8,035 | $145,026 | $219,201 | $161,311 | $121,562 | $97,286 | $130,937 |
| Welded link chain of iron/steel | $972,731 | $2,231,746 | $3,353,008 | $4,457,561 | $1,827,237 | $1,603,964 | $3,714,089 |
| Chain, of iron/steel, n.e.s. in 73.15 | $340,598 | $378,746 | $302,363 | $352,936 | $251,174 | $334,901 | $541,668 |
| Parts of chains (excl. articulated link chain), of iron/steel | $4,647,879 | $3,171,555 | $3,559,877 | $485,086 | $202,818 | $407,752 | $865,848 |
| Total | $7,630,560 | $7,417,568 | $10,855,982 | $10,453,017 | $5,118,454 | $6,953,617 | $14,302,414 |
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