The number of directly connecting users from Russia does appear to have doubled [1], but this can also be seen in UK user numbers [2]. For such an increase to be seen globally my hunch is that this is down to either the Pirate Browser [3] or some other software release - not necessarily a response to a particular law being passed, NSA leak etc.
And usage from Bulgaria increased seven to eight times [1]. This is really strange, I don't know anybody who uses tor on purpose. My money is on a bittorrent client connecting automatically.
https://metrics.torproject.org/users.html?graph=direct-users...