How Many Documents in a Day?

How many new XML documents are created every day?

I mean here to include xml-rpc and SOAP messages,
database reports, transcriptions of ancient manuscripts,
XHTML documents, SVG illustrations, inter-component messages
in cars, shoe-to-ipod signals (?), desktop configuration files,
mobile phone 3G modem configurations...

I do not mean to include transmission of existing documents,
just as looking at a static HTML-encoded Web page with a Web
browser constitutes a transmission but not creation of a new
document.

Any ideas?

Liam


-- 
Liam Quin, W3C XML Activity Lead, http://www.w3.org/People/Quin/
http://www.holoweb.net/~liam/ * http://www.fromoldbooks.org/