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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $429,994 | $2,631,528 | $124,158 | $278,234 | $307,823 | $2,261,299 | $1,706,375 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $5,502,657 | $13,407,473 | $16,081,480 | $7,492,900 | $7,062,815 | $10,232,834 | $13,594,843 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $5,939,340 | $4,191,744 | $5,762,352 | $6,725,351 | $7,182,831 | $6,900,671 | $8,000,351 |
| Total | $11,871,991 | $20,230,745 | $21,967,990 | $14,496,485 | $14,553,469 | $19,394,804 | $23,301,569 |
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