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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | $2,292,665 | $2,019,179 | $1,729,237 | $1,958,735 | $1,708,699 | $1,233,677 | $894,725 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $2,316,853 | $4,331,365 | $3,372,024 | $2,953,864 | $5,090,008 | $3,982,359 | $2,505,257 |
| Total | $4,609,518 | $6,350,544 | $5,101,261 | $4,912,599 | $6,798,707 | $5,216,036 | $3,399,982 |
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