One of the nice things about tracking the R subversion repository using git instead of subversion is you can do
git shortlog -s -n
which gives you
19855 ripley
6302 maechler
5299 hornik
2263 pd
1153 murdoch
813 iacus
716 luke
661 jmc
614 leisch
472 ihaka
403 murrell
286 urbaneks
284 rgentlem
269 apache
253 bates
249 tlumley
164 duncan
92 r
43 root
40 paul
40 falcon
39 lyndon
34 thomas
33 deepayan
26 martyn
18 plummer
15 (no author)
14 guido
3 ligges
1 mike
These data are since 1997 so for Brian Ripley, that’s 3.6 commits per day for the last 15 years.
I think that number 1 position will be out of reach for a while.
By the way, I highly recommend to anyone tracking subversion repositories that they use git to do it. You get all of the advantages of git and there are essentially no downsides.