For reference, my girl is about the same size and only a year and 3 months. We got them around the same time, too. It'd probably be more accurate to compare their growth via how much they weighed at a certain age, though.
I swear it still feels like we just got our babies a couple months ago! Can't believe how long it's actually been and how much they've grown since!
1.0 Ball Python (Mystic Potion) Tapioca
0.1 Northern Pine Snake - Impa
0.1 Russian Rat Snake (Melanistic) Kallari (RIP)