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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | $3,972 | $129,401 | $9,686 | | $3,134,120 | $3,846,629 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $906,287 | $463,954 | | $1,081 | | |
| Total | $910,259 | $593,355 | $9,686 | $1,081 | $3,134,120 | $3,846,629 |
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