Double-Digit Retail Sales Close 2020 and Start 2021, Reports NPD Share Article The final holiday push during the last two weeks of 2020, inching into 2021, each brought 13% year-over-year dollar sales growth, resulting in combined holiday 2020 season-to-date retail growth of 2% compared to the same 13 weeks a year ago, reports The NPD Group. “As gift card redemption and returns kick in through mid-January, not to mention post-season gifting delays amid delivery and gathering restrictions, the true holiday shopping season will continue to expand beyond any traditional measurement,” said Marshal Cohen, NPD’s chief industry advisor. PORT WASHINGTON, N.Y. (PRWEB) January 12, 2021 The final holiday push during the last two weeks of 2020, inching into 2021, each brought 13% year-over-year dollar sales growth, resulting in combined holiday 2020 season-to-date retail growth of 2% compared to the same 13 weeks a year ago, reports The NPD Group (1).