The falling interest in missions

Here's an image that is sobering for me:

                   Chart showing the search volume for Christian missions (as a percent of peak) since 2004

As you can see, it looks like a pretty steady decline by 80% of the search volume for Christian missions! I am not certain what the cause for this is, but it distresses me a little since missionary work is where I feel my strongest calling. Perhaps we can do something to turn things around and bring those numbers back up.

What are your thoughts on why these numbers might be falling?