July and August could be two of the busiest months ever seen for imports at the nation’s major retail container ports, possibly setting a new record as merchants enter the back-to-school season and begin to stock up for the holiday season that will follow, according to the monthly Global Port Tracker report released by the National Retail Federation (NRF) and Hackett Associates.

“We’re expecting retailers to import some of the largest volumes of merchandise ever,” said Jonathan Gold, NRF vice president for supply chain and customs policy. “That’s a good indicator of what could be ahead for consumer demand and retail sales, and it’s a sign that retail is going strong despite what you might read in the headlines.”

Ports covered by Global Port Tracker handled 1.72 million Twenty-Foot Equivalent Units (TEU) in May, up 7.3% from April and up 6.2% from May 2016. June was estimated at 1.66 million TEU, up 5.3% from the same time last year. July is forecast at 1.71 million TEU, up 5.1% from last year; August at 1.75 million TEU, up 2.2%; September at 1.66 million TEU, up 4.3%; October at 1.71 million TEU, up 2.2%, and November at 1.6 million TEU, down 2.7% from last year.

The August figure would be the highest monthly volume recorded since NRF began tracking imports in 2000, topping the 1.73 million TEU seen in March 2015. The 1.7 million-plus numbers seen in May, July, August and October represent four of the six busiest months in the report’s history.

The first half of 2017 is expected to total 9.63 million TEU, up 7.1% from the first half of 2016. Cargo volume for 2016 totaled 18.8 million TEU, up 3.1% from 2015, which had grown 5.4% from 2014.

NRF has forecast that 2017 retail sales–excluding automobiles, gasoline, and restaurants–will increase between 3.7-4.2% over 2016, driven by job and income growth coupled with low debt. Cargo volume does not correlate directly with sales because only the number of containers is counted, not the value of the cargo inside, but nonetheless provides a barometer of retailers’ expectations.

“Some actions to date appear to have alienated traditional allies and are causing them to work more closely together, leaving the United States on the sidelines,” wrote Ben Hackett, founder of Hackett Associates, in his monthly editorial comment in the report. “America First’ may well result in protectionist actions that will cut the United States off from the benefits of the global value chain and economic growth for U.S. importers and exporters.”

For more information, visit www.globalporttracker.com or www.NRF.com.