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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $13,280,565 | $15,441,679 | $13,822,413 | $18,284,560 | $12,823,773 | $15,089,169 | $16,964,761 |
| Articulated link chain other than roller chain, of iron/steel | $8,890,970 | $7,879,771 | $4,657,898 | $5,335,431 | $3,477,505 | $5,031,009 | $6,723,505 |
| Parts of articulated link chain of iron/steel | $118,436 | $402,725 | $123,699 | $1,184,062 | $764,900 | $1,279,120 | $1,234,048 |
| Skid chain of iron/steel | $32,370 | $61,007 | $4,242 | $23,828 | $125,014 | $240,977 | $170,328 |
| Stud-link chain of iron/steel | $499,944 | $256,038 | $185,971 | $174,397 | $106,807 | $172,719 | $512,732 |
| Welded link chain of iron/steel | $105,059 | $91,174 | $123,213 | $162,839 | $13,256 | $9,419 | $176,144 |
| Chain, of iron/steel, n.e.s. in 73.15 | $1,180,178 | $1,110,193 | $10,319,008 | $12,277,438 | $1,157,875 | $1,219,882 | $2,298,947 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,192,280 | $1,293,555 | $1,170,322 | $2,412,874 | $1,107,194 | $1,178,849 | $3,479,854 |
| Total | $25,299,802 | $26,536,142 | $30,406,766 | $39,855,429 | $19,576,324 | $24,221,144 | $31,560,319 |
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