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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $9,410,668 | $12,777,470 | $14,388,584 | $26,556,663 | $26,014,354 | $18,652,772 | $16,520,563 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $20,601,018 | $18,600,582 | $24,974,214 | $99,868,016 | $27,393,622 | $56,365,147 | $54,944,331 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $23,280,381 | $29,062,567 | $41,423,827 | $56,977,165 | $97,572,658 | $85,501,374 | $171,809,158 |
| Total | $53,292,067 | $60,440,619 | $80,786,625 | $183,401,844 | $150,980,634 | $160,519,293 | $243,274,052 |
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