how many pics?

Each time I upgrade my camera I find that even though I'm getting a large enough memory card, it always seems to fall short. These days micro sd cards have an amazing capacity and it's especially important to have one with enough capacity if you're going to shoot in RAW format where the size goes up by over ten times, so you barely get enough shots before the card is full. I've been downloading my pics every week and sometimes, that's not soon enough.