Private-label brand sales closed out a decade of strong growth, posting sales increases across all three major retail channels in 2010, according to the latest market data published in the Private Label Manufacturers Association’s (PLMA) Private Label Yearbook.

Over the past decade, annual sales of private-label products increased 40% in U.S. supermarkets. In total outlets—comprised of U.S. supermarkets, drug stores and mass merchandisers, including Wal-Mart—store-brand sales increased by almost 2%, while dollar share advanced by almost half a point to a new record level. Overall, sales were $88.5 billion, according to The Nielsen Co., which provided the private-label sales and market share trends data.

Store-brands share of dollar sales advanced to a record 19.1% in supermarkets, and unit market share was 23.5%. For Total outlets, store-brands dollar share rose to 17.4% and unit share came in at 21.8%.