Good morning John,
You want to know how much spam we all receive? Well you asked…
In the last 30 days I have received 2495 spam emails. That's an average of just over 83 per day, or about three and a half per hour! Just to put that in context, I've averaged about 20 legitimate emails per day in the same period of time. The main reason for this inundation of spam is that most of my email addresses are listed on websites, which means the robots trawling the web for email addresses pick them up easily.
For the most part it doesn't bother me though as my email provider (Gmail) have fantastic spam filters, which learn based on what their users declare to be spam. I have probably one or two spam emails per week which I have to manually mark as spam.
I don't usually use a desktop client (Outlook, Thunderbird etc) because Gmail is web based, but everyone else in this house uses Thunderbird, which I like because it does a good job of learning which emails are spam.