I just looked into it and I'm surprised that there seems to be a huge effect. See http://i.imgur.com/QGxzRau.png for our analytics data.
Regardless, this is majorly exciting and this growth is a tremendous leap for the open source community.
This is GitLab.com (the SaaS) and about.gitlab.com (our static website) combined http://i.imgur.com/HzaqlAN.png
It's very easy to double numbers when these numbers are minuscule to start with.