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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $295,820 | $358,530 | $720,651 | $1,769,574 | $5,526,684 | $6,100,721 | $6,610,957 |
| Total | $295,820 | $358,530 | $720,651 | $1,769,574 | $5,526,684 | $6,100,721 | $6,610,957 |
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