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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $22,537,089 | $23,551,181 | $22,995,369 | $23,552,208 | $18,643,955 | $21,770,446 | $32,502,686 |
| Articulated link chain other than roller chain, of iron/steel | $14,268,355 | $11,020,293 | $15,053,692 | $17,155,179 | $15,214,845 | $15,857,170 | $20,952,927 |
| Parts of articulated link chain of iron/steel | $8,990,139 | $10,234,453 | $11,324,797 | $11,960,960 | $6,552,492 | $10,819,278 | $16,882,839 |
| Skid chain of iron/steel | $8,856,710 | $13,442,413 | $3,986,442 | $4,238,709 | $2,801,105 | $2,910,722 | $10,194,071 |
| Stud-link chain of iron/steel | $17,097,580 | $17,521,776 | $22,254,633 | $32,089,225 | $29,492,366 | $25,297,501 | $27,046,154 |
| Welded link chain of iron/steel | $5,674,482 | $5,402,097 | $6,525,607 | $7,607,834 | $6,320,570 | $6,382,893 | $8,822,008 |
| Chain, of iron/steel, n.e.s. in 73.15 | $9,890,972 | $11,346,969 | $8,177,043 | $10,571,870 | $28,386,132 | $41,981,100 | $42,113,825 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,378,288 | $1,886,687 | $1,521,774 | $2,021,390 | $1,357,845 | $1,613,704 | $1,602,150 |
| Total | $88,693,615 | $94,405,869 | $91,839,357 | $109,197,375 | $108,769,310 | $126,632,814 | $160,116,660 |
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