Container volumes through the ports of Seattle and Tacoma continued to struggle last month, dipping 9 percent year to date.

The ports of Seattle and Tacoma saw their combined container volumes fall 13 percent in January, continuing a trend that started in November.

Container volumes through Puget Sound’s largest container ports remained flat in 2014, according to numbers released jointly for the first time by the ports of Seattle and Tacoma.

Productivity issues plaguing U.S. West Coast ports since Oct. 31 prompted the Port of Tacoma’s container volumes to dive 8 percent over the same month last year. It marked the end of eight consecutive months of growth. 

Strong import container volumes drove the Port of Tacoma’s October volumes up 17.5 percent

Container volumes through the Port of Tacoma surged in September, posting a 20 percent gain over the same month last year. 

Larger vessels and the return of a former customer helped boost Port of Tacoma container volumes 10 percent last month compared to August 2013.

Port of Tacoma container volumes continued to climb in July, posting a 6 percent gain year over year and marking the fifth consecutive month of growth.

The Port of Tacoma handled this year’s 1 millionth container in June, and container volumes improved 22 percent year-over-year.

Port of Tacoma container volumes increased 17 percent in May, marking the third straight month of year-over-year growth.

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