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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $78,419 | $2,216,793 | $451,684 | $3,539,235 | $6,235,060 | $8,909,833 | $14,663,240 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $14,063,346 | $15,048,217 | $30,210,210 | $36,642,920 | $40,403,360 | $46,645,463 | $57,102,034 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $5,284,369 | $7,187,107 | $9,376,286 | $17,845,005 | $21,185,129 | $26,553,990 | $27,889,055 |
| Total | $19,426,134 | $24,452,117 | $40,038,180 | $58,027,160 | $67,823,549 | $82,109,286 | $99,654,329 |
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