I keep tacking RCS onto the ends of these, too :) It keeps surprising me - Mercurial passed RCS ~ last June, and Bazaar passed it in roughly June of this year. It gets a lot of usage still.
This whole article has been rendered silly based on this observation. Yes git's popularity has increased and passed subversion but it was a long time coming and not an explosion at all.
http://qa.debian.org/popcon-graph.php?packages=git+git-core&...