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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Instruments, app. & models designed for demonstrational purps. (e.g., in ed ... | $481,396 | $142,061 | $212,219 | $476,621 | $354,008 | $371,486 | $262,449 |
| Total | $481,396 | $142,061 | $212,219 | $476,621 | $354,008 | $371,486 | $262,449 |
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