The CHAMP Data (Coding of Health and Media Project) is a quantitative content analysis project that has coded a half sample of the top selling 30 U.S. films from 1950-2006 according to Variety magazine. The sampling is based on every other film from every year from 1950-2006. Because it is a half sample, there are 15, not 30, movies for each year of the sample. If a movie was unavailable, the next ranked movie was substituted in its place. YouthMediaRisk also includes a list of all top-30 films from 1950-2006 from Variety magazine.