Debian statistics allows you to quite objectively compare the popularity of various version control systems. Git on the graph is green.
Number of installations of version control systems for 2004-2011Statistics are collected from users who have installed the
popularity-contest (popcon) package. Once installed, popcon sends weekly information to Debian via e-mail about the packages installed on the system and the time of their last use.
If you filter the first chart and take into account only active users who ran the package in the last 30 days, then git and subversion show almost the same result.
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However, if you remember that until April 2010, the git package was called git-core, then we will get more objective statistics. Here you can see that git + git-core overtook subversion at the beginning of 2011 (among active users).
