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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $14,155,314 | $14,430,129 | $16,009,510 | $20,443,192 | $22,903,825 | $30,301,519 | $39,277,786 |
| Articulated link chain other than roller chain, of iron/steel | $840,233 | $262,897 | $279,921 | $1,047,239 | $2,914,902 | $292,445 | $1,388,195 |
| Parts of articulated link chain of iron/steel | $435,796 | $283,785 | $100,451 | $384,984 | $908,169 | $86,848 | $288,561 |
| Skid chain of iron/steel | $9,334 | $4,248 | $11,604 | $71,312 | $2,445 | | $673,050 |
| Stud-link chain of iron/steel | $82,085 | $2,719,687 | $53,882 | $28,312 | $134,773 | $856,086 | $55,121 |
| Welded link chain of iron/steel | $4,151 | $113,389 | $1,172,465 | $1,174,423 | $891,474 | $384,041 | $113,978 |
| Chain, of iron/steel, n.e.s. in 73.15 | $313,808 | $378,628 | $580,160 | $424,320 | $920,776 | $1,407,066 | $2,709,238 |
| Parts of chains (excl. articulated link chain), of iron/steel | $231,182 | $53,703 | $154,652 | $168,945 | $1,180,553 | $794,801 | $261,084 |
| Total | $16,071,903 | $18,246,466 | $18,362,645 | $23,742,727 | $29,856,917 | $34,122,806 | $44,767,013 |
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