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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Binoculars | $17,996,617 | $16,409,039 | $21,863,423 | $23,583,848 | $25,238,931 | $29,471,360 | $22,771,799 |
| Monoculars & oth. optical telescopes; oth. astronomical instr. (excl. instr ... | $20,633,216 | $15,230,373 | $13,469,854 | $13,358,012 | $13,448,487 | $14,124,119 | $13,810,263 |
| Parts & accessories, incl. mountings, of the instr. of 90.05 | $3,647,550 | $4,230,761 | $4,846,185 | $5,000,914 | $7,755,717 | $5,197,231 | $4,647,160 |
| Total | $42,277,383 | $35,870,173 | $40,179,462 | $41,942,774 | $46,443,135 | $48,792,710 | $41,229,222 |
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