Not a particularly big one. I couldn’t see any of the hide coloring or pattern. That helps to ‘guess’ an age of them.
They grow fast the first 3 – 4 years. The old growth spurt of teenagers. But after that, a long slow growth. I’m not sure they ever really stop. Though females usually don’t grow over 8 feet.

Didn’t know you could tell age visually. I just go by will hurt, will really hurt and hell no age levels.
😁. For the first four years they will grow a foot a year. That’s the easy one. For the next 3 or so the hide still has patches and colors. After that it goes Big A__ Gator.