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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $10,691,429 | $10,033,398 | $10,519,154 | $16,641,328 | $12,681,874 | $17,662,057 | $29,278,650 |
| Articulated link chain other than roller chain, of iron/steel | $11,800,031 | $11,125,312 | $9,809,084 | $19,822,360 | $12,689,133 | $15,358,415 | $23,967,523 |
| Parts of articulated link chain of iron/steel | $3,184,907 | $3,844,596 | $4,445,679 | $7,144,399 | $6,642,874 | $9,186,389 | $13,102,623 |
| Skid chain of iron/steel | $221,077 | $400,989 | $351,448 | $430,133 | $234,441 | $141,288 | $344,501 |
| Stud-link chain of iron/steel | $462,063 | $532,655 | $591,715 | $755,483 | $388,304 | $598,226 | $1,118,377 |
| Welded link chain of iron/steel | $1,388,033 | $1,479,367 | $1,620,678 | $1,815,229 | $2,074,554 | $2,940,043 | $3,568,578 |
| Chain, of iron/steel, n.e.s. in 73.15 | $2,539,579 | $4,647,975 | $8,315,421 | $9,033,277 | $6,054,738 | $9,965,974 | $12,050,578 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,439,274 | $1,490,917 | $2,330,121 | $3,585,858 | $2,753,603 | $2,537,775 | $3,544,788 |
| Total | $31,726,393 | $33,555,209 | $37,983,300 | $59,228,067 | $43,519,521 | $58,390,167 | $86,975,618 |
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