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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $3,981,139 | $4,856,740 | $681,419 | $3,007,535 | $11,106,635 | $4,065,383 | $6,988,358 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $10,803,500 | $11,924,746 | $8,683,486 | $10,151,969 | $10,105,574 | $10,091,945 | $12,775,400 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $8,073,323 | $10,955,653 | $9,949,275 | $15,629,451 | $8,056,561 | $4,928,686 | $8,844,448 |
| Total | $22,857,962 | $27,737,139 | $19,314,180 | $28,788,955 | $29,268,770 | $19,086,014 | $28,608,206 |
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