Numbers from the U.S. Commerce Department today reveal that unusually strong e-commerce sales in the second quarter appear to be continuing into Q3.

In July, the first month of the third quarter, what the Commerce Department calls “nonstore sales” reached $47.71 billion, a 14.1% increase compared with July 2015. This follows a similar increase in June, which marked the highest year-over-year jump all year.

Strong indicators for e-commerce so far in Q3 are in stark contrast to store sales, as total retail sales were essentially flat in July, the Commerce Department says. 

Nonstore sales occur mainly on the web but also include categories of retail sales that are declining, such as mail and phone orders and door-to-door sales. Thus, the growth in nonstore sales is consistently lower than the growth in e-commerce sales, which the Commerce Department reports quarterly. For example, nonstore sales grew 8.6% in Q1 while online retail sales grew 15.2%.

Last month, the U.S. Commerce Department reported that second quarter nonstore sales reached $138.96 billion, a 12.7% increase compared with the second quarter of last year. 

This could mean e-commerce sales in Q2 increased year-over-year by as much as 20%—the largest growth rate for e-commerce since 2007.

The Commerce Department reports Q2 e-commerce sales on Tuesday.