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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $34,425,300 | $35,401,425 | $42,227,111 | $49,750,920 | $43,633,198 | $47,505,077 | $62,040,884 |
| Articulated link chain other than roller chain, of iron/steel | $15,610,649 | $15,969,312 | $17,805,770 | $17,505,062 | $10,978,738 | $9,811,177 | $15,117,839 |
| Parts of articulated link chain of iron/steel | $7,507,943 | $8,029,228 | $10,477,857 | $11,998,630 | $7,961,320 | $16,600,268 | $14,931,388 |
| Skid chain of iron/steel | $18,323,164 | $20,533,228 | $8,586,518 | $9,960,793 | $15,056,555 | $21,717,932 | $21,393,168 |
| Stud-link chain of iron/steel | $1,804,196 | $3,319,668 | $2,666,816 | $3,727,930 | $5,483,817 | $4,229,595 | $5,500,305 |
| Welded link chain of iron/steel | $10,917,251 | $14,045,813 | $18,061,059 | $19,330,717 | $13,563,114 | $13,746,517 | $13,179,583 |
| Chain, of iron/steel, n.e.s. in 73.15 | $8,038,003 | $7,324,866 | $8,480,833 | $11,435,757 | $7,403,362 | $8,745,494 | $9,823,465 |
| Parts of chains (excl. articulated link chain), of iron/steel | $65,255,896 | $73,513,578 | $82,868,955 | $88,388,777 | $29,539,885 | $53,281,504 | $55,534,578 |
| Total | $161,882,402 | $178,137,118 | $191,174,919 | $212,098,586 | $133,619,989 | $175,637,564 | $197,521,210 |
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