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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | | | | | $8,841 | $11,691 | $75,703 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $913,464 | $2,449,418 | $3,230,201 | $6,561,725 | $2,352,565 | $498,796 | $777,852 |
| Total | $913,464 | $2,449,418 | $3,230,201 | $6,561,725 | $2,361,406 | $510,487 | $853,555 |
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