The MPAA is marking the 50th anniversary of its film ratings by releasing data on the breakdown of how movies have been rated over the last half century.
The R rating has been placed on far and away the majority of the movies since then, more than half of the almost 30,000 titles that have been given classifications.
The breakdown: Since 1968, the first year of the ratings classifications, there have been 17,202 movies rated R, 5,578 rated M/GP/PG, 4,913 rated PG-13 and 1,574 rated G. Just 524 movies have been rated X or NC-17, reflecting the reluctance of exhibitors to carry those titles.
The MPAA also said that over the years, 1.4% (or 428 titles) of the ratings have been appealed, and 0.6% (or 165 movies) have had their rating overturned. The MPAA's complete report is here. The organization also released a digital archive of documents, including such things as press releases and letters when it was formed, and copies of the pre-ratings Motion Picture Code.
Joan Graves, the chair of the Classification and Rating Administration and MPAA senior vice president, also answers commonly asked questions in a series of videos.
The trade association also released the results of a survey, conducted by Nielsen, of 1,559 parents of children between the ages of 7 and 16. It showed that 59% strongly and 36% somewhat agree that the ratings are helpful tools. There also was substantial agreement that the descriptors for the ratings were helpful tools for parents.
MPAA Chairman Charles Rivkin said in a statement, "Given the extraordinary changes in our culture, entertainment, and society over the last 50 years, this anniversary feels particularly hard-earned and special. We could point to many factors behind the ratings' success, but the clearest one of all comes directly from our founding mission: to maintain the trust and confidence of American parents."