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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Railway/tramway sleepers (cross-ties) of wood, not impregnated | $12,441,393 | $7,336,271 | $5,213,194 | $6,646,419 | $3,421,422 | $779,108 | $597,050 |
| Railway/tramway sleepers (cross-ties) of wood, other than those not impregn ... | $4,096,355 | $5,174,431 | $4,273,531 | $2,530,156 | $1,737,003 | $3,128,175 | $4,116,389 |
| Total | $16,537,748 | $12,510,702 | $9,486,725 | $9,176,575 | $5,158,425 | $3,907,283 | $4,713,439 |
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