NPD: Digital game sales growing year-over-year 33 percent

Joystiq: "According to GamesIndustry International, NPD analyst Liam Callahan told attendees that digital game content sales in 2012 reached $5.9 billion in the United States. Sales in the UK reached $1.7 billion, followed by Germany with $1.4 billion and France with $1 billion. Callahan also said that digital content composes 40 percent of the United States' total spend on games, an increase from 28 percent in 2010."