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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $5,056,520 | $5,443,232 | $9,726,994 | $9,812,390 | $10,097,932 | $17,582,495 | $23,034,174 |
| Articulated link chain other than roller chain, of iron/steel | $7,944,568 | $10,372,717 | $8,116,846 | $10,943,229 | $17,119,107 | $21,012,499 | $25,118,899 |
| Parts of articulated link chain of iron/steel | $295,270 | $201,534 | $193,903 | $810,508 | $453,528 | $3,451,730 | $6,231,597 |
| Skid chain of iron/steel | $180,501 | $172,557 | $1,066,664 | $382,359 | $115,502 | $282,051 | $153,920 |
| Stud-link chain of iron/steel | $15,771 | $4,670 | $71,257 | $53,153 | $1,080 | $11,207 | $88,208 |
| Welded link chain of iron/steel | $181 | $364 | $2,119 | $118,271 | $113,060 | $51,201 | $34,953 |
| Chain, of iron/steel, n.e.s. in 73.15 | $4,579,004 | $5,781,255 | $9,534,292 | $13,080,276 | $3,493,471 | $3,080,210 | $7,757,397 |
| Parts of chains (excl. articulated link chain), of iron/steel | $847,961 | $1,476,586 | $1,964,342 | $4,559,672 | $2,328,974 | $693,357 | $1,704,426 |
| Total | $18,919,776 | $23,452,915 | $30,676,417 | $39,759,858 | $33,722,654 | $46,164,750 | $64,123,574 |
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