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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $15,916,387 | $16,741,930 | $19,265,847 | $23,562,603 | $14,800,009 | $17,707,869 | $22,245,473 |
| Articulated link chain other than roller chain, of iron/steel | $1,267,983 | $2,477,387 | $2,050,164 | $2,222,315 | $761,028 | $1,239,879 | $1,547,379 |
| Parts of articulated link chain of iron/steel | $1,738,964 | $1,678,023 | $2,075,351 | $2,481,109 | $1,519,473 | $1,680,775 | $2,495,825 |
| Skid chain of iron/steel | $13,769,487 | $15,265,639 | $6,790,736 | $6,934,352 | $7,924,396 | $11,149,824 | $14,843,977 |
| Stud-link chain of iron/steel | $274,239 | $400,854 | $543,773 | $620,747 | $284,013 | $379,661 | $784,631 |
| Welded link chain of iron/steel | $14,438,571 | $16,699,028 | $23,041,080 | $27,968,674 | $18,958,750 | $22,980,393 | $30,223,751 |
| Chain, of iron/steel, n.e.s. in 73.15 | $4,149,931 | $2,606,408 | $2,940,348 | $2,776,186 | $2,175,128 | $2,136,751 | $3,477,357 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,922,693 | $2,289,410 | $2,864,482 | $3,170,973 | $3,429,198 | $1,788,311 | $3,035,898 |
| Total | $53,478,255 | $58,158,679 | $59,571,781 | $69,736,959 | $49,851,995 | $59,063,463 | $78,654,291 |
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