Five most successful movies of 2015 grossed $2.47 billion, accounting for 22% of the year’s total box office. The previous high for the top five was $2.05 billion, or 19% of the overall take, in 2012.

For the other 129 films released nationally last year, the results were anything but impressive. They brought in a collective $8.65 billion, the lowest total for non-top-five movies since 2008, when ticket prices were 14% lower.

Sequels and reboots continued to rule the box office last year. The only exceptions that made the top 10 were animated features, such as Pixar Animation Studios’ “Inside Out,” and Fox’s surprise hit adaptation of best-selling book “The Martian.”

The trend toward sequels, reboots, computer-animated films and adaptations of comic books, toys or videogames is likely to accelerate in coming years as the major studios, increasingly focused on big-budget “event” movies they hope will become blockbuster hits, rely on formulas that have worked for them before.

There were about 27 such films last year, and nearly 40 are scheduled for release this year and in 2017. Some of them are new installments of successful movie series like “X-Men” and “Fast and Furious” while others, such as “Wonder Woman” and “Ghostbusters” are attempts to create or refresh big-screen franchises.