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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | | $322,770 | $7,653,517 | $6,472,337 | $639,133 | $2,711,322 | $6,752,713 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $6,281,779 | $8,330,383 | $11,870,822 | $12,510,068 | $8,610,940 | $7,345,796 | $11,908,321 |
| Total | $6,281,779 | $8,653,153 | $19,524,339 | $18,982,405 | $9,250,073 | $10,057,118 | $18,661,034 |
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