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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $2,995,762 | $3,994,210 | $5,280,721 | $7,813,551 | $4,471,623 | $7,180,074 | $10,542,887 |
| Articulated link chain other than roller chain, of iron/steel | $3,281,833 | $4,960,160 | $5,390,023 | $6,091,252 | $7,567,855 | $5,818,616 | $9,799,477 |
| Parts of articulated link chain of iron/steel | $580,491 | $606,776 | $849,421 | $1,121,497 | $730,253 | $845,645 | $1,248,033 |
| Skid chain of iron/steel | $3,830,283 | $4,318,607 | $6,048,395 | $6,182,854 | $4,714,068 | $5,905,849 | $7,973,516 |
| Stud-link chain of iron/steel | $877,821 | $1,918,070 | $2,903,923 | $3,540,978 | $875,191 | $1,845,121 | $4,493,587 |
| Welded link chain of iron/steel | $2,327,494 | $3,264,093 | $4,353,064 | $4,619,285 | $3,584,806 | $4,850,419 | $11,560,522 |
| Chain, of iron/steel, n.e.s. in 73.15 | $6,026,008 | $6,447,747 | $5,976,555 | $8,297,889 | $5,665,174 | $8,166,603 | $7,972,971 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,115,341 | $3,093,195 | $3,665,741 | $3,840,017 | $3,392,608 | $4,926,168 | $7,120,749 |
| Total | $22,035,033 | $28,602,858 | $34,467,843 | $41,507,323 | $31,001,578 | $39,538,495 | $60,711,742 |
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