Although the DVR enjoyed 100% growth in adoption from 2004 to 2006, growth dropped to 13% from 2006 to 2008. The DVR has stopped selling itself. In response to this maturation of the industry, MSOs and DVR manufacturers must focus their strategy on HDTV owners, who demonstrate a healthy interest in DVR services, with 37% of HDTV owners also owning a DVR, compared with 12% of non-HDTV owners. In 2008, 63% of HDTV households did not own a DVR.