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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Binoculars | $30,904,388 | $29,487,614 | $35,903,993 | $30,576,073 | $26,591,038 | $27,730,529 | $29,945,909 |
| Monoculars & oth. optical telescopes; oth. astronomical instr. (excl. instr ... | $17,659,934 | $22,792,705 | $26,073,212 | $52,034,445 | $19,193,366 | $21,939,699 | $24,741,223 |
| Parts & accessories, incl. mountings, of the instr. of 90.05 | $11,932,842 | $9,792,549 | $7,740,196 | $12,273,172 | $10,210,033 | $32,384,895 | $22,361,700 |
| Total | $60,497,164 | $62,072,868 | $69,717,401 | $94,883,690 | $55,994,437 | $82,055,123 | $77,048,832 |
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