[Cthulhu_]

To be pedantic, before 1990 there were nearly 5000 movies released: https://www.reddit.com/r/dataisbeautiful/comments/v1fsld/oc_... (based on IMDB's dataset).

For a better comparison, you could look at China which only allows for a few dozen foreign films per year (https://en.wikipedia.org/wiki/Film_censorship_in_China#Quota...); which films depends on whether the publisher thinks it'll be successful there, whether it passes China's censors, and whether China was involved in its production. It's a different audience though, for example the Warcraft film bombed in the west but was hugely popular in China, possibly because of the relative scarcity of western films there?