Commodity2005200620072008200920102011
Dredgers$627,878      
Light-vessels, fire-floats, floating cranes & oth. vessels the navigability ...$9,801$16,152,644$6,127,661$2,756,826$14,516,131$5,624,071$30,258,177
Total$637,679$16,152,644$6,127,661$2,756,826$14,516,131$5,624,071$30,258,177