Are new visitors counted?

I am wondering if new visitors (i.e. very first visit as WWA defines it) are recorded. And if they are, where can i fetch the value? I checked the XML export of Visitors → Overview as well as Visitors → Frequency and Loyalty, but the figure was not offered.

My motivation is to compute the Ratio of New Visitors to Returning Visitors (Peterson`s Web Analytics Demystified has a nice chapter on it).