"Figure 1-3 U.S. Lock Usage by Type, 1993–2006",,,,,,
(thousands),,,,,,
,Barges empty ,Barges loaded ,Commercial lockages ,Commercial vessels ,Other lockages*,Other vessels*
1993," 955,596 "," 1,601,853 "," 471,605 "," 536,716 "," 10,462 "," 12,351 "
1994," 976,444 "," 1,761,123 "," 501,045 "," 571,472 "," 11,996 "," 14,310 "
1995," 1,038,496 "," 1,756,099 "," 495,506 "," 564,153 "," 12,580 "," 14,815 "
1996," 1,036,587 "," 1,730,702 "," 488,051 "," 557,010 "," 12,232 "," 14,028 "
1997," 1,002,348 "," 1,701,706 "," 486,199 "," 555,440 "," 12,263 "," 13,969 "
1998," 967,426 "," 1,734,723 "," 485,390 "," 552,841 "," 13,144 "," 14,997 "
1999," 1,049,631 "," 1,808,014 "," 497,084 "," 559,888 "," 13,025 "," 14,759 "
2000," 996,008 "," 1,764,081 "," 582,776 "," 544,778 "," 9,352 "," 10,655 "
2001," 946,613 "," 1,691,546 "," 555,926 "," 525,856 "," 9,639 "," 10,901 "
2002," 1,003,131 "," 1,744,881 "," 571,310 "," 535,587 "," 9,350 "," 10,668 "
2003," 930,941 "," 1,622,718 "," 547,589 "," 515,047 "," 9,578 "," 11,158 "
2004," 878,515 "," 1,619,610 "," 539,204 "," 518,448 "," 10,215 "," 13,092 "
2005," 893,100 "," 1,642,297 "," 535,021 "," 515,393 "," 9,941 "," 12,784 "
2006," 905,839 "," 1,655,604 "," 538,580 "," 507,093 "," 9,864 "," 12,631 "
*  “Other lockages” and “other” vessels are too close to the x axis to be seen. ,,,,,,
"SOURCE: U.S. Army Corps of Engineers, Waterborne Commerce Statistics Center, Navigation Data Center, available at www.iwr.usace.army.mil/ndc as of April 2007.",,,,,,