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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical fibres, optical fibre bundles & cables (excl. of 85.44) | $32,688,064 | $28,077,884 | $9,307,407 | $13,113,391 | $11,003,955 | $13,002,598 | $16,124,273 |
| Sheets & plates of polarising mat. | $53,691 | $51,978 | $29,250 | $130,781 | $525,797 | $883,681 | $776,575 |
| Contact lenses | $8,043,348 | $10,354,323 | $12,751,560 | $18,521,776 | $21,260,094 | $17,943,275 | $24,955,482 |
| Spectacle lenses of glass, unmounted | $2,228,915 | $1,837,182 | $3,874,000 | $1,630,093 | $1,444,734 | $1,511,037 | $1,389,955 |
| Spectacle lenses of mats. other than glass, unmounted | $25,655,932 | $25,818,510 | $27,244,850 | $28,456,593 | $20,936,224 | $24,071,174 | $28,920,794 |
| Lenses (excl. of 9001.30-9001.50), prisms, mirrors & oth. optical elements, ... | $155,167,419 | $166,168,143 | $169,069,218 | $167,961,674 | $120,031,917 | $144,841,528 | $183,253,531 |
| Total | $223,837,369 | $232,308,020 | $222,276,285 | $229,814,308 | $175,202,721 | $202,253,293 | $255,420,610 |
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