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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $178,730,225 | $195,721,444 | $203,530,662 | $218,224,896 | $152,334,748 | $206,803,590 | $260,122,414 |
| Articulated link chain other than roller chain, of iron/steel | $68,043,158 | $81,116,675 | $77,758,707 | $95,648,487 | $55,466,551 | $69,937,067 | $95,401,139 |
| Parts of articulated link chain of iron/steel | $34,369,860 | $34,654,911 | $29,994,425 | $40,013,464 | $22,867,760 | $43,004,382 | $45,213,428 |
| Skid chain of iron/steel | $28,814,227 | $26,189,704 | $34,485,878 | $45,940,390 | $32,579,895 | $29,502,765 | $43,552,792 |
| Stud-link chain of iron/steel | $13,795,846 | $45,566,260 | $43,328,265 | $11,648,578 | $22,822,554 | $5,086,682 | $10,672,290 |
| Welded link chain of iron/steel | $90,287,783 | $87,391,836 | $97,960,482 | $133,370,692 | $79,407,885 | $88,540,430 | $127,199,119 |
| Chain, of iron/steel, n.e.s. in 73.15 | $22,525,594 | $28,882,510 | $37,503,378 | $24,793,159 | $17,864,139 | $17,299,407 | $18,365,219 |
| Parts of chains (excl. articulated link chain), of iron/steel | $26,355,995 | $37,553,107 | $43,799,813 | $47,657,773 | $27,199,016 | $33,181,306 | $44,538,940 |
| Total | $462,922,688 | $537,076,447 | $568,361,610 | $617,297,439 | $410,542,548 | $493,355,629 | $645,065,341 |
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