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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Roller chain of iron/steel | $63,729,722 | $64,968,534 | $69,731,925 | $62,514,613 | $54,484,439 | $67,034,534 | $69,489,806 |
| Articulated link chain other than roller chain, of iron/steel | $25,624,812 | $28,275,338 | $26,935,642 | $26,960,140 | $21,719,602 | $25,516,504 | $30,299,128 |
| Parts of articulated link chain of iron/steel | $7,123,367 | $7,591,377 | $8,183,821 | $10,962,731 | $8,191,441 | $8,786,339 | $9,662,782 |
| Skid chain of iron/steel | $6,383,234 | $8,016,882 | $11,279,923 | $8,413,718 | $6,831,834 | $7,743,225 | $11,614,538 |
| Stud-link chain of iron/steel | $2,010,210 | $2,100,260 | $2,135,809 | $1,769,254 | $1,801,676 | $2,487,892 | $2,334,628 |
| Welded link chain of iron/steel | $27,318,721 | $27,169,391 | $27,119,666 | $29,777,979 | $18,728,597 | $26,542,864 | $33,158,964 |
| Chain, of iron/steel, n.e.s. in 73.15 | $10,370,246 | $10,989,202 | $11,164,126 | $20,836,785 | $9,728,105 | $9,600,959 | $12,759,323 |
| Parts of chains (excl. articulated link chain), of iron/steel | $13,465,596 | $17,504,011 | $14,550,871 | $12,075,036 | $6,960,247 | $10,233,653 | $14,479,283 |
| Total | $156,025,908 | $166,614,995 | $171,101,783 | $173,310,256 | $128,445,941 | $157,945,970 | $183,798,452 |
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