How many spam mail do you get daily on your own domain?

I am curious to know how many spam people could get in a personally registered domain. Spam is defined as mail sent by someone you have never contact before, so you don't know how he gets hold of your email address. If you are willing to help, please answer the following questions:

1. how long does your domain exist?
2. number of email accounts in your domain?
3. approximate number of spam mail sent to your domain daily?

Thanks in advance.