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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical signalling/safety/traffic control equip. for railways/tramways | $3,480,033 | $1,357,016 | $2,973,560 | $3,304,006 | $4,020,057 | $3,114,420 | $4,402,958 |
| Electrical signalling/safety/traffic control equip. other than for railways ... | $11,404,542 | $18,729,226 | $21,468,982 | $16,741,299 | $20,923,078 | $20,024,305 | $18,794,103 |
| Parts of the electrical signalling/safety/traffic control equip. of 85.30 | $4,349,423 | $3,209,878 | $5,037,251 | $5,758,116 | $8,321,142 | $8,797,181 | $6,024,149 |
| Total | $19,233,998 | $23,296,120 | $29,479,793 | $25,803,421 | $33,264,277 | $31,935,906 | $29,221,210 |
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