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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $10,715,912 | $7,593,636 | $7,976,023 | $9,869,596 | $6,115,266 | $8,151,338 | $14,756,445 |
| Articulated link chain other than roller chain, of iron/steel | $2,215,957 | $6,234,886 | $9,767,712 | $8,074,852 | $5,533,902 | $4,686,235 | $5,378,536 |
| Parts of articulated link chain of iron/steel | $3,117,231 | $3,045,701 | $2,693,952 | $3,358,494 | $2,147,912 | $2,699,571 | $1,723,843 |
| Skid chain of iron/steel | $832,686 | $1,012,583 | $698,200 | $857,041 | $673,309 | $1,081,636 | $928,249 |
| Stud-link chain of iron/steel | $7,859 | $36,864 | $43,952 | $38,302 | $41,916 | $15,853 | $25,958 |
| Welded link chain of iron/steel | $5,871,738 | $6,600,588 | $8,403,417 | $9,838,315 | $6,250,559 | $6,834,878 | $7,417,429 |
| Chain, of iron/steel, n.e.s. in 73.15 | $3,815,010 | $5,005,499 | $5,662,680 | $5,384,156 | $4,380,798 | $4,225,306 | $5,154,524 |
| Parts of chains (excl. articulated link chain), of iron/steel | $3,583,722 | $4,575,025 | $5,686,336 | $6,213,800 | $3,891,285 | $4,006,785 | $6,416,786 |
| Total | $30,160,115 | $34,104,782 | $40,932,272 | $43,634,556 | $29,034,947 | $31,701,602 | $41,801,770 |
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