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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $2,187,709 | $1,322,485 | $6,872,981 | $15,969,058 | $4,148,684 | $1,480,676 | $729,441 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $34,859,161 | $49,490,761 | $45,879,334 | $51,003,390 | $50,910,475 | $47,284,809 | $53,643,063 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $11,552,850 | $6,681,723 | $9,589,495 | $8,624,741 | $11,110,246 | $13,064,801 | $8,305,974 |
| Total | $48,599,720 | $57,494,969 | $62,341,810 | $75,597,189 | $66,169,405 | $61,830,286 | $62,678,478 |
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