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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $38,743,484 | $43,167,518 | $44,812,541 | $49,351,105 | $39,001,935 | $64,186,652 | $87,164,841 |
| Articulated link chain other than roller chain, of iron/steel | $17,234,331 | $21,296,692 | $18,856,620 | $20,615,511 | $13,642,093 | $30,242,954 | $47,874,820 |
| Parts of articulated link chain of iron/steel | $5,332,318 | $5,844,143 | $5,562,830 | $6,744,867 | $7,957,499 | $7,397,072 | $9,332,870 |
| Skid chain of iron/steel | $214,639 | $623,839 | $1,250,984 | $1,525,565 | $814,828 | $1,741,099 | $2,526,930 |
| Stud-link chain of iron/steel | $1,022,778 | $1,490,828 | $1,855,425 | $1,687,725 | $1,227,920 | $832,417 | $1,742,187 |
| Welded link chain of iron/steel | $6,234,800 | $6,831,100 | $7,695,519 | $7,643,648 | $6,707,688 | $8,531,078 | $10,206,814 |
| Chain, of iron/steel, n.e.s. in 73.15 | $9,908,005 | $5,492,975 | $4,832,192 | $4,245,317 | $3,357,486 | $3,428,914 | $4,931,221 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,318,516 | $1,226,788 | $1,374,825 | $1,514,635 | $926,139 | $1,294,163 | $2,066,161 |
| Total | $80,008,871 | $85,973,883 | $86,240,936 | $93,328,373 | $73,635,588 | $117,654,349 | $165,845,844 |
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