$ git log --pretty=format:"%an <%ae>" --abbrev-commit v3.0..HEAD --author=canonical|sort|uniq -c|sort -nr

    212 David Henningsson <david.henningsson@canonical.com>
    185 Ming Lei <ming.lei@canonical.com>
    125 Maarten Lankhorst <maarten.lankhorst@canonical.com>
     88 Seth Forshee <seth.forshee@canonical.com>
     64 Tim Gardner <tim.gardner@canonical.com>
     62 John Johansen <john.johansen@canonical.com>
     58 Colin Ian King <colin.king@canonical.com>
     50 Hui Wang <hui.wang@canonical.com>
     48 Tyler Hicks <tyhicks@canonical.com>
     47 Bryan Wu <bryan.wu@canonical.com>
     40 AceLan Kao <acelan.kao@canonical.com>
     32 Andy Whitcroft <apw@canonical.com>
     15 Luis Henriques <luis.henriques@canonical.com>
     14 Ike Panhc <ike.pan@canonical.com>
     14 Adam Lee <adam.lee@canonical.com>
     12 Chris J Arges <chris.j.arges@canonical.com>
     11 Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
     11 Alex Hung <alex.hung@canonical.com>
      9 Stefan Bader <stefan.bader@canonical.com>
      9 Manoj Iyer <manoj.iyer@canonical.com>
      7 Keng-Yu Lin <kengyu@canonical.com>
      6 Wen-chien Jesse Sung <jesse.sung@canonical.com>
      6 Kamal Mostafa <kamal@canonical.com>
      4 Serge Hallyn <serge.hallyn@canonical.com>
      4 Paolo Pisati <paolo.pisati@canonical.com>
      4 Joseph Salisbury <joseph.salisbury@canonical.com>
      4 Chase Douglas <chase.douglas@canonical.com>
      3 Jeremy Kerr <jeremy.kerr@canonical.com>
      3 Edward Lin <yidi.lin@canonical.com>
      2 TienFu Chen <tienfu.chen@canonical.com>
      2 Shuduo Sang <shuduo.sang@canonical.com>
      2 Jay Vosburgh <jay.vosburgh@canonical.com>
      2 Gavin Guo <gavin.guo@canonical.com>
      2 Dave Chiluk <chiluk@canonical.com>
      2 Andreas Pokorny <andreas.pokorny@canonical.com>
      1 Steve Conklin <sconklin@canonical.com>
      1 Jussi Pakkanen <jussi.pakkanen@canonical.com>
      1 Jesse Sung <jesse.sung@canonical.com>
      1 James M. Leddy <james.leddy@canonical.com>
      1 Eric Miao <eric.miao@canonical.com>
      1 Dimitri John Ledkov <dimitri.ledkov@canonical.com>
      1 dann frazier <dann.frazier@canonical.com>
      1 Cyrus Lien <cyrus.lien@canonical.com>
      1 Colin King <colin.king@canonical.com>
      1 Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>