Training chart

Is there a chart of all trainings like there is a chart for all played games in the profile?
I'd like to see how I improved (for my personal motivation). The short-term chart on the left is pretty meaningless to me because it is a mere up-and-down.

It should be coming in the profile page redesign -- one of the next major overhauls that will be occurring on the site. It'll be here in the next couple of months at soonest.