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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $32,395,957 | $36,870,001 | $43,337,000 | $51,786,606 | $30,884,391 | $38,513,434 | $48,538,186 |
| Articulated link chain other than roller chain, of iron/steel | $12,305,013 | $14,282,926 | $17,535,436 | $19,634,426 | $14,141,542 | $14,927,197 | $18,365,641 |
| Parts of articulated link chain of iron/steel | $4,488,768 | $6,660,290 | $6,068,677 | $5,659,065 | $4,078,096 | $6,544,538 | $13,184,040 |
| Skid chain of iron/steel | $17,283,767 | $24,136,854 | $15,184,588 | $8,688,166 | $18,129,250 | $19,183,456 | $39,347,698 |
| Stud-link chain of iron/steel | $1,235,260 | $1,766,354 | $1,592,958 | $2,257,296 | $600,761 | $944,253 | $1,440,398 |
| Welded link chain of iron/steel | $6,909,140 | $6,346,872 | $8,665,904 | $6,840,116 | $9,346,263 | $7,061,578 | $5,857,514 |
| Chain, of iron/steel, n.e.s. in 73.15 | $6,815,227 | $7,897,210 | $9,260,191 | $12,741,991 | $8,971,154 | $9,459,416 | $9,813,862 |
| Parts of chains (excl. articulated link chain), of iron/steel | $5,240,437 | $4,558,509 | $4,038,167 | $3,366,797 | $3,278,974 | $2,135,410 | $2,290,398 |
| Total | $86,673,569 | $102,519,016 | $105,682,921 | $110,974,463 | $89,430,431 | $98,769,282 | $138,837,737 |
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