I don't quite understand the statistics. if this is "searches," the statistics do not show the number of "hits." If I am wrong, please clarify.
One would assume that once you have identified your site, you will no longer search the site. Also, a site as simple as jw.org does not require a search unless you are really stupid.
I am encouraged with the increase in exjw searches. This implies that these are original searches. That is a good thing.