If you include Secret santa e.g at work, Scouts leader, neighbours or whoever is on your list.
I have an acquaintance who said he bought for his wife, son and one niece. He is about 65
I feel quite overwhelmed with gift buying. We have about 75 people on our list 
This includes a lot of family - DH's side. A lot of the presents are token presents e g £7 voucher to cousins of his I would not recognise but he has always done this and doesn't want to stop.
We have lots of Godchildren between us too and their parents are old friends we buy stuff for. Nothing too expensive but it does add up.
I can't see it changing but wondering if you anyone else has a similarly high number of presents to buy