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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $12,907,667 | $18,428,520 | $26,639,049 | $29,185,781 | $24,164,891 | $24,762,873 | $29,999,385 |
| Articulated link chain other than roller chain, of iron/steel | $8,687,231 | $8,018,504 | $12,027,278 | $13,648,796 | $7,606,740 | $5,272,522 | $7,490,074 |
| Parts of articulated link chain of iron/steel | $1,303,393 | $903,406 | $788,901 | $1,281,259 | $2,073,785 | $776,374 | $631,882 |
| Skid chain of iron/steel | $468,908 | $639,974 | $900,755 | $675,477 | $875,976 | $1,230,847 | $1,892,479 |
| Stud-link chain of iron/steel | $150,652 | $557,685 | $1,080,633 | $828,785 | $721,430 | $425,849 | $926,044 |
| Welded link chain of iron/steel | $3,811,012 | $6,596,673 | $9,055,486 | $8,442,358 | $5,865,795 | $5,454,129 | $6,149,444 |
| Chain, of iron/steel, n.e.s. in 73.15 | $2,568,244 | $5,541,401 | $6,418,134 | $7,874,061 | $6,681,793 | $8,412,820 | $9,308,046 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,614,880 | $2,848,124 | $5,260,715 | $3,667,524 | $3,672,100 | $14,445,697 | $5,186,244 |
| Total | $32,511,987 | $43,534,287 | $62,170,951 | $65,604,041 | $51,662,510 | $60,781,111 | $61,583,598 |
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