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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $3,799,638 | $3,729,667 | $4,456,910 | $5,708,555 | $4,981,299 | $6,470,720 | $8,801,575 |
| Articulated link chain other than roller chain, of iron/steel | $2,310,516 | $3,181,706 | $2,844,211 | $3,833,881 | $1,891,072 | $2,671,382 | $2,409,401 |
| Parts of articulated link chain of iron/steel | $591,227 | $327,690 | $468,102 | $516,440 | $481,213 | $1,278,416 | $395,039 |
| Skid chain of iron/steel | $2,131,125 | $4,016,073 | $6,943,815 | $10,383,461 | $5,001,279 | $5,699,913 | $3,724,194 |
| Stud-link chain of iron/steel | $10,627,625 | $12,762,132 | $10,296,917 | $24,766,020 | $11,802,276 | $782,638 | $8,820,849 |
| Welded link chain of iron/steel | $15,699,614 | $23,640,417 | $21,878,891 | $24,123,011 | $15,841,917 | $14,809,446 | $16,218,662 |
| Chain, of iron/steel, n.e.s. in 73.15 | $498,517 | $6,051,338 | $15,151,625 | $4,594,221 | $3,443,152 | $29,424,867 | $10,704,610 |
| Parts of chains (excl. articulated link chain), of iron/steel | $6,020,927 | $4,876,243 | $5,230,703 | $2,064,374 | $2,257,404 | $1,819,012 | $3,123,771 |
| Total | $41,679,189 | $58,585,266 | $67,271,174 | $75,989,963 | $45,699,612 | $62,956,394 | $54,198,101 |
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