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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $9,508,664 | $9,559,592 | $11,897,883 | $16,517,688 | $9,922,310 | $17,935,442 | $21,562,511 |
| Articulated link chain other than roller chain, of iron/steel | $2,635,933 | $3,849,662 | $4,751,413 | $4,466,714 | $3,016,835 | $5,637,654 | $10,747,567 |
| Parts of articulated link chain of iron/steel | $3,092,452 | $4,467,616 | $6,403,280 | $6,017,989 | $7,848,838 | $10,312,494 | $13,416,373 |
| Skid chain of iron/steel | $54,680 | $229,297 | $112,696 | $2,807,141 | $26,509 | $101,192 | $195,912 |
| Stud-link chain of iron/steel | $3,136,136 | $1,006,639 | $1,723,903 | $1,773,352 | $2,053,918 | $3,069,168 | $812,013 |
| Welded link chain of iron/steel | $757,082 | $1,055,962 | $1,964,203 | $1,670,595 | $1,840,092 | $1,972,808 | $2,323,578 |
| Chain, of iron/steel, n.e.s. in 73.15 | $2,325,247 | $2,469,756 | $2,275,005 | $3,617,566 | $2,608,143 | $2,362,099 | $4,331,391 |
| Parts of chains (excl. articulated link chain), of iron/steel | $980,250 | $1,407,547 | $3,539,376 | $4,534,381 | $4,506,715 | $3,226,225 | $2,496,742 |
| Total | $22,490,444 | $24,046,071 | $32,667,759 | $41,405,426 | $31,823,360 | $44,617,082 | $55,886,087 |
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