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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $55,665,571 | $65,274,659 | $68,716,416 | $74,402,148 | $46,019,432 | $50,699,120 | $62,093,370 |
| Articulated link chain other than roller chain, of iron/steel | $35,826,314 | $38,952,140 | $53,001,662 | $60,854,462 | $49,234,076 | $56,796,992 | $58,493,275 |
| Parts of articulated link chain of iron/steel | $7,152,252 | $7,462,754 | $7,514,205 | $8,620,873 | $8,066,428 | $9,511,942 | $15,983,693 |
| Skid chain of iron/steel | $29,492,227 | $37,101,326 | $24,771,734 | $22,253,582 | $30,044,838 | $41,059,691 | $48,498,283 |
| Stud-link chain of iron/steel | $3,787,652 | $4,680,227 | $5,977,961 | $6,668,324 | $5,442,195 | $9,151,747 | $5,873,348 |
| Welded link chain of iron/steel | $20,799,810 | $23,376,619 | $28,806,411 | $26,410,091 | $13,324,337 | $17,347,424 | $24,403,910 |
| Chain, of iron/steel, n.e.s. in 73.15 | $30,433,927 | $33,283,508 | $43,424,134 | $46,470,370 | $32,113,535 | $33,474,909 | $39,093,868 |
| Parts of chains (excl. articulated link chain), of iron/steel | $11,559,367 | $6,800,445 | $7,259,897 | $6,576,570 | $2,928,116 | $5,183,328 | $6,174,295 |
| Total | $194,717,120 | $216,931,678 | $239,472,420 | $252,256,420 | $187,172,957 | $223,225,153 | $260,614,042 |
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