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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical fibres, optical fibre bundles & cables (excl. of 85.44) | $2,151,929 | $7,378,461 | $10,130,794 | $9,472,879 | $9,808,222 | $12,661,980 | $8,375,201 |
| Sheets & plates of polarising mat. | $7,785 | $2,025 | $14,523 | $13,938 | $12,394 | $40,033 | $63,913 |
| Contact lenses | $10,750,982 | $11,427,331 | $11,357,889 | $11,277,547 | $11,234,947 | $13,260,810 | $13,735,611 |
| Spectacle lenses of glass, unmounted | $2,664,400 | $4,497,710 | $3,167,344 | $2,756,352 | $1,561,618 | $1,491,003 | $7,475,261 |
| Spectacle lenses of mats. other than glass, unmounted | $19,114,290 | $20,473,904 | $19,351,308 | $23,408,851 | $19,540,871 | $20,366,214 | $16,451,982 |
| Lenses (excl. of 9001.30-9001.50), prisms, mirrors & oth. optical elements, ... | $2,125,352 | $2,829,526 | $4,655,795 | $6,584,763 | $5,552,248 | $5,268,598 | $5,815,600 |
| Total | $36,814,738 | $46,608,957 | $48,677,653 | $53,514,330 | $47,710,300 | $53,088,638 | $51,917,568 |
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