Movie ticket prices in U.S. hit all-time high

CBS NEWS -- Movie ticket prices in the United States have reached an all-time high, according to new data released by the National Association of Theatre Owners (NATO).The price of a movie ticket went up 3 percent last year from $8.17 in 2014 to $8.43 in 2015.NATO found that in 2015, 3D box office movies were up 20 percent from 2014, and comprised of 15 percent of total box office sales. The rise in average prices could be partly attributed to 3D movies.The cost of a movie ticket has risen stead