I'm getting about 1000 a day.
Everything @myemailaddress comes to my mail box. Most of them are made up names that have never been used. We've got a broadband contract with Demon so changing ISP isn't an option without losing money. Demon has a filter but you can't see what's been deleted and when I tried it legitimate emails disappeared into it.
I use webmail and sort by 'to' and often delete in batches of 50 when there's a long list of the same non-existent name. I could sort them on the computer, but I don't like downloading them. I didn't go on line for two days this week and came back to 2900 e-mails - about 48MB. Demon don't limit space - they delete after 30 days.
There was an article in the Guardian a few weeks ago which went through various ways of dealing with spam and came to the conclusion that the only thing that would effectively stop it was if no one replied to it! But the way it's going e-mail won't be usable.