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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $5,182,496 | $5,267,932 | $7,659,943 | $8,663,674 | $8,234,077 | $9,440,734 | $12,421,294 |
| Articulated link chain other than roller chain, of iron/steel | $4,969,058 | $5,153,529 | $8,023,721 | $12,495,758 | $13,966,330 | $12,201,839 | $17,452,661 |
| Parts of articulated link chain of iron/steel | $598,934 | $805,064 | $715,341 | $1,043,293 | $2,895,402 | $3,169,701 | $3,790,272 |
| Skid chain of iron/steel | $12,314 | $205,304 | $203,571 | $200,052 | $167,247 | $169,842 | $454,077 |
| Stud-link chain of iron/steel | $266,528 | $222,512 | $3,031,424 | $367,666 | $632,368 | $1,751,172 | $3,034,218 |
| Welded link chain of iron/steel | $813,267 | $722,570 | $760,613 | $914,939 | $890,447 | $1,153,140 | $1,574,161 |
| Chain, of iron/steel, n.e.s. in 73.15 | $527,736 | $603,306 | $1,078,955 | $2,413,227 | $2,513,283 | $1,757,010 | $1,505,815 |
| Parts of chains (excl. articulated link chain), of iron/steel | $169,925 | $280,899 | $1,809,244 | $5,412,566 | $2,503,574 | $452,797 | $563,342 |
| Total | $12,540,258 | $13,261,116 | $23,282,812 | $31,511,175 | $31,802,728 | $30,096,235 | $40,795,840 |
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