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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $70,051,203 | $73,655,449 | $66,357,033 | $57,486,999 | $37,255,390 | $43,187,141 | $55,759,818 |
| Articulated link chain other than roller chain, of iron/steel | $22,108,109 | $19,760,348 | $24,940,964 | $29,034,220 | $22,384,758 | $18,926,885 | $21,637,487 |
| Parts of articulated link chain of iron/steel | $9,194,278 | $9,112,637 | $13,276,792 | $14,859,192 | $7,747,483 | $5,046,472 | $7,075,485 |
| Skid chain of iron/steel | $179,182 | $164,203 | $149,132 | $184,973 | $1,053,760 | $223,454 | $854,374 |
| Stud-link chain of iron/steel | $1,237,642 | $811,198 | $1,398,766 | $1,233,186 | $567,826 | $2,186,597 | $1,419,160 |
| Welded link chain of iron/steel | $11,930,113 | $8,222,063 | $6,360,054 | $8,677,736 | $5,375,422 | $4,529,954 | $3,746,715 |
| Chain, of iron/steel, n.e.s. in 73.15 | $11,994,576 | $12,277,365 | $10,697,058 | $12,899,470 | $11,439,690 | $9,237,477 | $8,364,791 |
| Parts of chains (excl. articulated link chain), of iron/steel | $12,780,739 | $17,264,046 | $30,728,726 | $13,771,488 | $13,169,092 | $12,867,312 | $13,888,084 |
| Total | $139,475,842 | $141,267,309 | $153,908,525 | $138,147,264 | $98,993,421 | $96,205,292 | $112,745,914 |
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