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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical, photographic, cinematographic, measuring, checking, precision, med ... | $11,798,601,889 | $13,503,576,423 | $14,385,021,467 | $15,967,723,210 | $13,619,601,895 | $14,412,194,823 | $15,637,607,217 |
| Clocks and watches and parts thereof | $821,014,499 | $1,052,605,556 | $1,334,912,236 | $1,509,217,977 | $1,282,635,983 | $1,471,813,822 | $1,937,120,897 |
| Musical instruments; parts and accessories of such articles | $158,766,557 | $178,796,897 | $197,548,628 | $211,429,888 | $183,506,218 | $228,537,275 | $262,657,512 |
| Total | $12,778,382,945 | $14,734,978,876 | $15,917,482,331 | $17,688,371,075 | $15,085,744,096 | $16,112,545,920 | $17,837,385,626 |
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