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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | $2,624,000 | $1,623,000 | $3,177,000 | $8,108,000 | $4,057,000 | $2,338,379 | $1,695,443 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $1,263,000 | $2,692,000 | $9,898,000 | $7,327,000 | $7,217,000 | $5,535,267 | $8,356,148 |
| Total | $3,887,000 | $4,315,000 | $13,075,000 | $15,435,000 | $11,274,000 | $7,873,646 | $10,051,591 |
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