You can put this solution on YOUR website! Start out at birth at 10".
Grow linearly or close to linearly until about age 18-20.to about 72".
Stay constant until about age 70 and then maybe lose an inch or two by the time you're 100.
These are my guesses you can adjust the numbers as you see fit.
(0,10)
(20,72)
(100,70)