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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical fibres, optical fibre bundles & cables (excl. of 85.44) | $15,314,279 | $18,779,587 | $23,738,948 | $24,543,060 | $25,628,467 | $20,414,847 | $29,514,127 |
| Sheets & plates of polarising mat. | $577,996 | $1,606,143 | $1,747,471 | $1,325,803 | $1,112,363 | $1,488,554 | $853,194 |
| Contact lenses | $52,727,156 | $52,467,959 | $62,609,484 | $65,965,170 | $61,624,364 | $68,810,438 | $75,157,382 |
| Spectacle lenses of glass, unmounted | $5,874,126 | $3,650,164 | $5,975,026 | $3,340,679 | $2,332,339 | $3,969,662 | $2,590,879 |
| Spectacle lenses of mats. other than glass, unmounted | $28,139,492 | $37,614,332 | $46,001,391 | $49,514,712 | $50,134,428 | $55,189,456 | $61,021,405 |
| Lenses (excl. of 9001.30-9001.50), prisms, mirrors & oth. optical elements, ... | $15,015,302 | $13,274,792 | $12,124,858 | $15,314,165 | $14,521,964 | $21,105,350 | $19,250,053 |
| Total | $117,648,351 | $127,392,977 | $152,197,178 | $160,003,589 | $155,353,925 | $170,978,307 | $188,387,040 |
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