Do we grow more from the bellybutton up or down?

Stupid question, I guess… do we grow more during the normal human growth process (0 year-21 years) between our big toes and the bellybutton or between the bellybutton and the top of our heads?

Bellybutton to toes, but not by as much as you’d think: http://en.wikipedia.org/wiki/File:Neoteny_body_proportion_heterochrony_human.png