Most of those baptised at the assemblies/conventions in the last 10 years I was in were teenagers. It was rare to see someone above 25 being baptised.
I was baptised at 23 and out of 21 of us baptised there was only 1 person older than me and the rest were years younger including a 10yr old. I wonder if that 10yr old who will now be 22/23 Is still in or if they woke up and are now living their life.