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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $71,174,000 | $76,626,000 | $90,118,000 | $114,945,000 | $77,048,000 | $90,636,360 | $122,430,472 |
| Articulated link chain other than roller chain, of iron/steel | $27,121,000 | $26,154,000 | $30,968,000 | $34,966,000 | $26,198,000 | $32,594,219 | $46,063,474 |
| Parts of articulated link chain of iron/steel | $15,443,000 | $19,639,000 | $24,626,000 | $30,228,000 | $18,161,000 | $23,443,407 | $29,896,342 |
| Skid chain of iron/steel | $14,331,000 | $15,767,000 | $16,214,000 | $8,680,000 | $7,248,000 | $13,632,815 | $25,542,428 |
| Stud-link chain of iron/steel | $5,924,000 | $4,009,000 | $3,600,000 | $5,886,000 | $4,409,000 | $1,987,291 | $3,928,188 |
| Welded link chain of iron/steel | $19,847,000 | $21,846,000 | $27,404,000 | $32,897,000 | $20,592,000 | $26,531,657 | $35,521,575 |
| Chain, of iron/steel, n.e.s. in 73.15 | $13,307,000 | $14,713,000 | $17,908,000 | $22,368,000 | $14,547,000 | $13,740,129 | $18,660,861 |
| Parts of chains (excl. articulated link chain), of iron/steel | $12,171,000 | $11,346,000 | $15,628,000 | $22,162,000 | $14,410,000 | $17,857,795 | $24,499,324 |
| Total | $179,318,000 | $190,100,000 | $226,466,000 | $272,132,000 | $182,613,000 | $220,423,673 | $306,542,664 |
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