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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Binoculars | $16,239,646 | $9,822,588 | $15,085,642 | $15,871,008 | $18,976,035 | $12,546,301 | $9,267,890 |
| Monoculars & oth. optical telescopes; oth. astronomical instr. (excl. instr ... | $8,354,951 | $8,454,629 | $7,236,982 | $5,906,984 | $7,146,411 | $10,609,074 | $9,141,474 |
| Parts & accessories, incl. mountings, of the instr. of 90.05 | $3,307,920 | $3,118,531 | $6,792,235 | $4,925,899 | $4,734,431 | $3,677,807 | $5,830,608 |
| Total | $27,902,517 | $21,395,748 | $29,114,859 | $26,703,891 | $30,856,877 | $26,833,182 | $24,239,972 |
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