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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | $12,559,120 | $7,387,667 | $5,462,517 | $5,842,712 | $3,947,360 | $253,123 | $245,292 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $5,070,869 | $6,343,166 | $4,717,491 | $2,727,683 | $2,207,859 | $3,465,687 | $4,217,172 |
| Total | $17,629,989 | $13,730,833 | $10,180,008 | $8,570,395 | $6,155,219 | $3,718,810 | $4,462,464 |
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