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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $37,670,536 | $39,742,998 | $48,650,442 | $54,020,971 | $37,901,497 | $47,874,841 |
| Articulated link chain other than roller chain, of iron/steel | $7,374,484 | $6,187,269 | $7,857,693 | $10,186,214 | $7,853,137 | $6,935,097 |
| Parts of articulated link chain of iron/steel | $2,782,214 | $3,694,773 | $3,200,723 | $5,170,465 | $2,661,418 | $3,273,323 |
| Skid chain of iron/steel | $3,647,461 | $3,394,518 | $3,785,418 | $2,920,451 | $2,463,346 | $3,301,165 |
| Stud-link chain of iron/steel | $5,225,043 | $3,776,433 | $7,333,389 | $12,306,561 | $7,617,403 | $10,679,069 |
| Welded link chain of iron/steel | $7,700,195 | $9,649,628 | $13,758,168 | $12,741,240 | $9,962,185 | $9,985,692 |
| Chain, of iron/steel, n.e.s. in 73.15 | $4,168,349 | $5,379,470 | $7,513,190 | $10,404,290 | $6,193,237 | $5,147,961 |
| Parts of chains (excl. articulated link chain), of iron/steel | $7,000,290 | $8,002,620 | $7,590,051 | $14,080,639 | $4,612,846 | $5,486,032 |
| Total | $75,568,572 | $79,827,709 | $99,689,074 | $121,830,831 | $79,265,069 | $92,683,180 |
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