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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $495,912 | $637,718 | $455,186 | $1,595,706 | $1,442,388 | $1,819,220 | $10,013,922 |
| Articulated link chain other than roller chain, of iron/steel | $3,421,922 | $2,621,696 | $3,863,784 | $7,541,718 | $6,048,135 | $6,778,780 | $6,127,401 |
| Parts of articulated link chain of iron/steel | $169,539 | $132,917 | $499,984 | $834,995 | $469,490 | $255,816 | $600,379 |
| Skid chain of iron/steel | $24,497 | $91,271 | $283,595 | $422,224 | $1,092,796 | $511,699 | $289,383 |
| Stud-link chain of iron/steel | $28,302 | $36,942 | $92,142 | $90,642 | $85,430 | $236,302 | $165,604 |
| Welded link chain of iron/steel | $393,561 | $430,854 | $482,640 | $1,582,631 | $965,522 | $1,082,761 | $1,690,257 |
| Chain, of iron/steel, n.e.s. in 73.15 | $686,061 | $129,831 | $2,019,986 | $1,079,672 | $1,709,063 | $872,181 | $4,674,741 |
| Parts of chains (excl. articulated link chain), of iron/steel | $519,799 | $263,802 | $261,839 | $550,136 | $325,380 | $1,636,689 | $376,617 |
| Total | $5,739,593 | $4,345,031 | $7,959,156 | $13,697,724 | $12,138,204 | $13,193,448 | $23,938,304 |
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