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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Binoculars | $29,787,160 | $11,826,563 | $17,540,820 | $27,838,394 | $60,828,818 | $50,127,405 | $56,235,156 |
| Monoculars & oth. optical telescopes; oth. astronomical instr. (excl. instr ... | $921,984 | $867,440 | $1,590,379 | $1,663,931 | $1,318,469 | $2,065,224 | $2,821,567 |
| Parts & accessories, incl. mountings, of the instr. of 90.05 | $2,003,230 | $4,954,829 | $2,873,385 | $2,818,947 | $7,471,790 | $7,136,819 | $4,232,350 |
| Total | $32,712,374 | $17,648,832 | $22,004,584 | $32,321,272 | $69,619,077 | $59,329,448 | $63,289,073 |
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