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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | $18,673,588 | $23,065,627 | $28,857,345 | $34,705,060 | $23,239,240 | $20,471,960 | $20,627,488 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $10,330,943 | $9,104,985 | $11,993,019 | $14,804,267 | $13,836,288 | $11,690,120 | $11,378,092 |
| Total | $29,004,531 | $32,170,612 | $40,850,364 | $49,509,327 | $37,075,528 | $32,162,080 | $32,005,580 |
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