Over the past year, consumers bought more than 13.6 billion products marketed as sustainable for a total of $73 billion, NielsenIQ found.Rena Goldman Sales of packaged goods advertised as environmentally and socially conscious have been rising. Over the past year, consumers plunked down $73 billion for products described as sustainable. The federal government is updating guides around how companies can prove their environmental claims. This article is part of Insider's weekly newsletter on sustainability.