Gone With The Wind was released pretty much at the end of the economy crisis. If you want to go with that though; there were less movie theaters in 1939, therefore it was shown less often than Titanic was. Titanic was in the movie theaters a VERY long time; I believe they even extended the theatrical showings.
The 1930's actually brought about a LARGE increase of movies because more people were going to the movies, not only to escape the realities of their life, but also because of how cheap it was (around 5 to 10 cents). Color movies were debuted during the 1930's. Musicals were being produced for the screen as well.