Defining new customer

Hi,

Thankyou alot, this really helps.

Apologies for the late reaction as I had to tackle some urgent projects.

This is exactly what I needed but there is an exception. 

If their first purchase was on 01/01/2000, they are a "new customer" until 01/01/2001 (period of 12 months). But if they haven't bought anything in the upcoming 12 months, so from 01/01/2001 till 01/01/2002. They switch from "new customer" to "support customer". Do you think this is also possible?