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| Commodity | 2005 | 2007 | 2008 | 2009 | 2010 |
| Roller chain of iron/steel | $75,622 | $210,013 | $232,338 | $706,225 | $882,318 |
| Articulated link chain other than roller chain, of iron/steel | $56,475 | $61,528 | $68,564 | $107,330 | $131,129 |
| Parts of articulated link chain of iron/steel | $5,123 | $7,850 | $256 | $1,491 | $11,908 |
| Skid chain of iron/steel | $8,248 | $5,568 | $19,858 | | $1,940 |
| Welded link chain of iron/steel | $1,219 | $35,321 | $46,603 | $19,677 | $11,131 |
| Chain, of iron/steel, n.e.s. in 73.15 | $160,333 | $200,352 | $317,531 | $122,839 | $296,023 |
| Parts of chains (excl. articulated link chain), of iron/steel | $27,946 | $40,193 | $58,566 | $147,007 | $28,843 |
| Total | $334,966 | $560,825 | $743,716 | $1,104,569 | $1,363,292 |
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