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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical fibres, optical fibre bundles & cables (excl. of 85.44) | $19,614,524 | $23,522,090 | $25,667,684 | $26,354,115 | $17,897,473 | $20,389,194 | $18,228,790 |
| Sheets & plates of polarising mat. | $1,194,632 | $1,364,325 | $1,687,087 | $1,813,571 | $1,670,232 | $1,287,192 | $1,601,983 |
| Contact lenses | $57,233,403 | $48,670,584 | $57,637,998 | $46,887,109 | $51,449,865 | $57,076,874 | $55,177,310 |
| Spectacle lenses of glass, unmounted | $7,774,614 | $12,193,498 | $9,375,873 | $1,982,578 | $1,614,550 | $1,497,014 | $1,003,066 |
| Spectacle lenses of mats. other than glass, unmounted | $28,430,097 | $28,540,947 | $34,104,346 | $37,002,383 | $36,877,351 | $36,844,653 | $38,869,222 |
| Lenses (excl. of 9001.30-9001.50), prisms, mirrors & oth. optical elements, ... | $14,621,448 | $16,060,456 | $14,121,037 | $13,736,223 | $9,146,380 | $15,298,229 | $21,755,589 |
| Total | $128,868,718 | $130,351,900 | $142,594,025 | $127,775,979 | $118,655,851 | $132,393,156 | $136,635,960 |
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