“With all major categories posting increases, unit sales of print books rose 8.2% in 2020 over 2019 at outlets that report to NPD BookScan. For the year ended Jan. 2, 2021, units hit 750.9 million, up from 693.7 million the year before. BookScan said the 8.2% gain was the largest annual increase since 2010.” – Publishers Weekly
