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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Tubes, pipes & hollow profiles of cast iron | $13,201,482 | $12,264,946 | $13,216,256 | $14,641,021 | $20,522,144 | $23,233,712 | $15,063,538 |
| Total | $13,201,482 | $12,264,946 | $13,216,256 | $14,641,021 | $20,522,144 | $23,233,712 | $15,063,538 |
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