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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $674,449 | $1,367,571 | $2,093,755 | $2,646,861 | $2,058,940 | $2,611,912 | $3,049,730 |
| Articulated link chain other than roller chain, of iron/steel | $5,702,005 | $6,034,764 | $9,588,736 | $7,622,837 | $4,124,383 | $4,921,459 | $6,409,523 |
| Parts of articulated link chain of iron/steel | $270,621 | $1,498,650 | $326,647 | $509,118 | $409,880 | $394,049 | $735,441 |
| Skid chain of iron/steel | $2,364,449 | $3,352,890 | $5,859,459 | $5,071,315 | $617,625 | $825,763 | $1,658,216 |
| Stud-link chain of iron/steel | $2,158,338 | $7,007,062 | $14,497,932 | $4,303,402 | $1,509,830 | $3,813 | $35,949 |
| Welded link chain of iron/steel | $3,056,916 | $722,997 | $10,594,913 | $29,131,838 | $14,868,335 | $31,452,947 | $27,383,871 |
| Chain, of iron/steel, n.e.s. in 73.15 | $161,933 | $145,763 | $8,461,336 | $239,489 | $181,577 | $97,639 | $218,464 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,166,069 | $1,382,456 | $2,690,193 | $5,721,552 | $428,499 | $1,399,556 | $1,064,347 |
| Total | $16,554,780 | $21,512,153 | $54,112,971 | $55,246,412 | $24,199,069 | $41,707,138 | $40,555,541 |
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