Global semiconductor sales rose 6.5 percent overall in 2020, as a recovery during the last three months of the year helped offset a sharp dropoff in March and April, when pandemic stay-home orders rolled out around the world.

Global sales were $439 billion in 2020, according to data from the Semiconductor Industry Association (SIA). The group said sales from U.S. chipmakers were about $208 billion, or about 47 percent of the total.

Chip sales into the United States were $94.15 billion, up 19.8 percent from the previous year.

Falan Yinug, SIA’s director of industry statistics and economic policy, said much of the rise in U.S. purchasing was driven by high-end memory chips used in applications such as data centers.

American tech companies such as Amazon.com, Microsoft and Alphabet’s Google all saw dramatic rises in the use of cloud computing over the course of 2020 as businesses adapted to working from home.

While U.S.-based companies represented nearly half of semiconductor sales, they represented about 12 percent of chip manufacturing capacity in 2020. That is down from 37 percent in 1990, as most U.S. companies now source their chips from factories in Asia.

John Neuffer, president and chief executive of the industry group, said legislation passed last year to provide incentives to chip factories in the United States could help change that figure this year. The law could provide funding to U.S. companies such as Intel or GlobalFoundries, as well as foreign firms such as Samsung Electronics or Taiwan Semiconductor Manufacturing.

“Over the next 10 years, semiconductor manufacturing is going to grow 56 percent,” Neuffer said. “We want to make sure we’re getting a bigger piece of the manufacturing pie.”