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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $6,669,209 | $7,386,477 | $8,441,990 | $14,324,282 | $8,383,325 | $10,381,946 | $9,052,064 |
| Articulated link chain other than roller chain, of iron/steel | $28,561,258 | $30,250,935 | $40,135,204 | $54,704,669 | $41,066,370 | $60,649,008 | $68,146,968 |
| Parts of articulated link chain of iron/steel | $1,343,374 | $2,053,425 | $1,991,033 | $3,387,094 | $3,277,949 | $7,049,459 | $7,368,220 |
| Skid chain of iron/steel | $90,984 | $797,035 | $1,679,898 | $440,248 | $608,515 | $897,212 | $1,487,524 |
| Stud-link chain of iron/steel | $640,196 | $578,574 | $1,659,176 | $2,916,970 | $1,240,176 | $1,444,163 | $2,440,760 |
| Welded link chain of iron/steel | $1,692,514 | $1,944,589 | $3,624,111 | $11,889,596 | $4,028,687 | $12,695,501 | $12,018,222 |
| Chain, of iron/steel, n.e.s. in 73.15 | $2,545,246 | $8,168,788 | $11,676,365 | $6,204,559 | $2,610,883 | $2,649,108 | $3,832,091 |
| Parts of chains (excl. articulated link chain), of iron/steel | $2,741,888 | $3,355,172 | $4,896,971 | $4,554,072 | $7,979,464 | $5,386,620 | $6,956,597 |
| Total | $44,284,669 | $54,534,995 | $74,104,748 | $98,421,490 | $69,195,369 | $101,153,017 | $111,302,446 |
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