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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $2,258,167 | $3,921,879 | $4,385,672 | $5,370,384 | $3,269,196 | $2,137,313 | $2,788,965 |
| Articulated link chain other than roller chain, of iron/steel | $1,447,675 | $1,167,106 | $1,584,784 | $3,132,350 | $3,035,262 | $3,907,337 | $4,349,793 |
| Parts of articulated link chain of iron/steel | $1,185,206 | $1,317,405 | $1,811,980 | $2,090,200 | $900,524 | $466,074 | $665,017 |
| Skid chain of iron/steel | $901,296 | $1,668,879 | $1,311,030 | $1,513,051 | $1,441,721 | $2,105,420 | $2,611,577 |
| Stud-link chain of iron/steel | $102,823 | $86,981 | $510,787 | $439,461 | $441,954 | $133,524 | $362,873 |
| Welded link chain of iron/steel | $1,342,827 | $1,446,489 | $1,402,371 | $2,254,827 | $1,244,952 | $1,178,844 | $2,071,409 |
| Chain, of iron/steel, n.e.s. in 73.15 | $829,968 | $1,133,828 | $1,108,634 | $1,511,609 | $804,314 | $1,178,426 | $1,506,988 |
| Parts of chains (excl. articulated link chain), of iron/steel | $424,198 | $620,729 | $633,845 | $1,324,935 | $437,544 | $628,219 | $5,490,915 |
| Total | $8,492,160 | $11,363,296 | $12,749,103 | $17,636,817 | $11,575,467 | $11,735,157 | $19,847,537 |
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