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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $3,702,809 | $1,964,304 | $4,826,662 | $4,003,654 | $2,756,971 | $3,047,472 | $1,964,409 |
| Articulated link chain other than roller chain, of iron/steel | $373,014 | $758,133 | $412,309 | $1,297,722 | $1,020,392 | $858,646 | $929,728 |
| Parts of articulated link chain of iron/steel | $1,892,390 | $2,017,585 | $2,430,458 | $1,294,885 | $758,943 | $1,085,763 | $183,444 |
| Skid chain of iron/steel | $126,676 | $46,643 | $41,480 | $87,818 | $134,088 | $5,489 | $9,533 |
| Stud-link chain of iron/steel | $356,385 | $286,134 | $156,523 | $63,653 | $222,177 | $18,846 | $810,952 |
| Welded link chain of iron/steel | $2,035,369 | $2,651,864 | $3,716,655 | $5,036,922 | $997,508 | $967,151 | $799,677 |
| Chain, of iron/steel, n.e.s. in 73.15 | $3,005,438 | $3,730,425 | $8,185,275 | $6,774,279 | $2,646,086 | $1,759,884 | $2,910,379 |
| Parts of chains (excl. articulated link chain), of iron/steel | $714,160 | $525,330 | $590,678 | $675,706 | $145,637 | $174,992 | $47,599 |
| Total | $12,206,241 | $11,980,418 | $20,360,040 | $19,234,639 | $8,681,802 | $7,918,243 | $7,655,721 |
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