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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | | $9,213 | $741 | $8,249 | $13,796 | $20,687 | $99,196 |
| Articulated link chain other than roller chain, of iron/steel | $14,502 | $41,014 | $9,824 | $19,684 | $36,234 | $56,249 | $50,561 |
| Parts of articulated link chain of iron/steel | $32 | $2,245 | $98 | $11,157 | $19,686 | $6,245 | $3,766 |
| Skid chain of iron/steel | | $946 | | | $10,000 | | |
| Stud-link chain of iron/steel | | $1 | | $6,390 | $955 | | |
| Welded link chain of iron/steel | $432 | $6,200 | $1,041 | $1,081 | $2,609 | $57,506 | $16,974 |
| Chain, of iron/steel, n.e.s. in 73.15 | $20,462 | $12,228 | $23,932 | $8,224 | $18,689 | $50,755 | $24,475 |
| Parts of chains (excl. articulated link chain), of iron/steel | $1,729 | $240 | $3,796 | $32 | $729 | $759 | $80,197 |
| Total | $37,157 | $72,087 | $39,432 | $54,817 | $102,698 | $192,201 | $275,169 |
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