From the Journal of Commerce:

Containerized imports through major U.S. port gateways hit record levels in March as West Coast ports disgorged shipments that backed up during weeks of gridlock, according to the latest Global Port Tracker report.

The number was up 44.9 percent from February, when West Coast ports were crippled by reduced productivity during labor-management squabbling over a new longshore workers’ contract, and up 33.1 percent from March 2014.

More at the JOC