Hmm, I should try that out myself. (Got a script handy or do I have to write my own one?)

I did produce this a while ago:

I finished my Ph.D. here and started working
           .      |   I started going out with livredor
           #      |     |
           #      |     | .  m
           #      |     | #  #
           #  #   v     v #  #
    Mb  #  #  #  #     #  #  #
        #  #  #  #  #  #  #  #
        #  #  #  #  #  #  #  #
        #  #  #  #  #  #  #  #
        97 98 99 00 01 02 03 04

This is, obviously, not up to date, but I'd have to filter out photos to get a meaningful figure for the later years...