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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical, photographic, cinematographic, measuring, checking, precision, med ... | $140,727,500 | $161,032,600 | $194,046,700 | $247,497,800 | $196,204,400 | $238,123,900 | $303,164,400 |
| Clocks and watches and parts thereof | $3,532,500 | $3,289,100 | $2,142,900 | $1,887,800 | $1,175,000 | $2,502,000 | $3,084,600 |
| Musical instruments; parts and accessories of such articles | $194,200 | $184,400 | $194,500 | $286,300 | $213,400 | $199,500 | $325,500 |
| Total | $144,454,200 | $164,506,100 | $196,384,100 | $249,671,900 | $197,592,800 | $240,825,400 | $306,574,500 |
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