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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $3,304,000 | $5,800,000 | $10,866,000 | $11,642,000 | $30,811,000 | $44,319,235 | $13,394,201 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $17,667,000 | $28,591,000 | $35,036,000 | $31,604,000 | $17,128,000 | $15,396,204 | $24,740,749 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $51,376,000 | $50,781,000 | $38,265,000 | $52,608,000 | $52,841,000 | $50,107,551 | $59,183,964 |
| Total | $72,347,000 | $85,172,000 | $84,167,000 | $95,854,000 | $100,780,000 | $109,822,990 | $97,318,914 |
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