I have received 35 so far, and expect to receive a few more. I have sent slightly more than I am likely to receive, as a couple of people I've sent to are elderly with dementia, and one or two others have stopped sending cards.
I love receiving cards, but have reduced the number I send slightly in recent years, as there were one or two people I just exchanged a card with every year but had no other contact, and thought there was no point in continuing.