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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $6,683,825 | $7,054,077 | $8,603,053 | $12,001,773 | $8,159,938 | $10,078,844 | $15,271,546 |
| Articulated link chain other than roller chain, of iron/steel | $4,306,466 | $4,969,691 | $6,093,063 | $6,927,551 | $8,973,307 | $5,770,009 | $6,408,366 |
| Parts of articulated link chain of iron/steel | $2,160,263 | $2,196,629 | $3,208,184 | $4,002,784 | $1,990,301 | $3,950,637 | $6,237,845 |
| Skid chain of iron/steel | $2,859,159 | $3,166,674 | $2,682,331 | $2,032,175 | $1,999,858 | $2,292,415 | $4,071,088 |
| Stud-link chain of iron/steel | $227,128 | $255,891 | $234,243 | $526,021 | $148,753 | $359,141 | $375,349 |
| Welded link chain of iron/steel | $6,008,529 | $8,085,279 | $8,742,216 | $9,634,170 | $7,184,023 | $7,524,103 | $10,839,587 |
| Chain, of iron/steel, n.e.s. in 73.15 | $2,162,174 | $2,235,610 | $3,282,357 | $3,765,107 | $2,856,733 | $3,029,665 | $3,566,960 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,574,596 | $2,506,263 | $3,427,353 | $3,844,985 | $2,295,945 | $1,595,031 | $3,379,248 |
| Total | $26,982,140 | $30,470,114 | $36,272,800 | $42,734,566 | $33,608,858 | $34,599,845 | $50,149,989 |
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