More so than any other announcement or interview the trailers have been far and away the main engine driving interest over the past year. Outside of polling the public, search trends for trailers leading up to a film’s release can be one of the best predictors of that movie’s success in the box office. “Trailer-related search trends four weeks out from a movie release provide strong predictive power for opening weekend box office revenue.” says a Google study from 2012. The study goes on to say, "Trailer search volume on Google, coupled with both the franchise status of the movie and seasonality can predict opening weekend box office revenue with 94% accuracy.”
It is hard to track the first point at which people started searching for the term “The Force Awakens,” since way back in 2012, someone managed to guess the title of the film in an online forum. You can read more about that here
The most interesting finding from the chart above is that following the release of the official trailer, YouTube search interest surged. However, as we approached the the final weeks leading up to opening weekend searches for trailers had decreased while, conversely, search interest for "Star Wars Full Movie" had increased significantly as frugal fans looked for ways to rewatch the previous six films.