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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | | | $1,156 | $8 | $8,370 | $4,884 | $33,923 |
| Articulated link chain other than roller chain, of iron/steel | $1,025 | $3,408 | $11,943 | $9,533 | $6,457 | $143,219 | $7,263 |
| Parts of articulated link chain of iron/steel | $27,691 | $10,251 | $77,766 | $2,431 | $19,392 | $32,040 | $148 |
| Skid chain of iron/steel | | | $2,457 | $5,981 | $209 | | $4,086 |
| Stud-link chain of iron/steel | $1,296 | | $216 | | $6,514 | $7,061 | |
| Chain, of iron/steel, n.e.s. in 73.15 | $99 | $513 | $2,336 | $4,544 | $11,762 | $76,094 | $2,341 |
| Parts of chains (excl. articulated link chain), of iron/steel | $30,304 | $2,366,047 | $132,152 | $78,770 | $19,753 | $58,317 | $106,488 |
| Total | $60,415 | $2,380,219 | $228,026 | $101,267 | $72,457 | $321,615 | $154,249 |
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