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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | | | | | | | $14,130 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $439,730 | $2,673,885 | $1,058,782 | $2,910,339 | $3,553,720 | $1,045,504 | $1,681,789 |
| Total | $439,730 | $2,673,885 | $1,058,782 | $2,910,339 | $3,553,720 | $1,045,504 | $1,695,919 |
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