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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $20,305,613 | $23,952,385 | $29,251,418 | $32,205,911 | $24,965,740 | $25,258,822 | $34,804,029 |
| Articulated link chain other than roller chain, of iron/steel | $8,704,524 | $10,006,449 | $11,928,241 | $11,705,580 | $7,975,526 | $7,829,653 | $8,994,804 |
| Parts of articulated link chain of iron/steel | $1,571,017 | $1,204,372 | $1,398,304 | $1,868,704 | $1,607,064 | $930,047 | $1,260,043 |
| Skid chain of iron/steel | $2,578,349 | $2,619,570 | $2,769,413 | $2,836,132 | $2,217,143 | $2,412,019 | $4,063,969 |
| Stud-link chain of iron/steel | $635,852 | $766,923 | $1,292,455 | $1,396,084 | $1,345,719 | $606,051 | $1,293,877 |
| Welded link chain of iron/steel | $6,794,296 | $12,518,678 | $14,229,160 | $16,643,517 | $12,989,566 | $9,550,544 | $12,081,051 |
| Chain, of iron/steel, n.e.s. in 73.15 | $4,601,753 | $6,883,996 | $8,445,194 | $9,077,644 | $7,629,398 | $9,751,347 | $11,208,370 |
| Parts of chains (excl. articulated link chain), of iron/steel | $5,756,470 | $4,772,256 | $7,487,904 | $5,688,817 | $5,322,254 | $5,210,041 | $5,955,553 |
| Total | $50,947,874 | $62,724,629 | $76,802,089 | $81,422,389 | $64,052,410 | $61,548,524 | $79,661,696 |
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