According to the latest blog post on the Autodesk Labs blog, Italy does pretty well compared to other countries. The graph compares downloads of the Inventor 2009 Ribbon UI from different countries in the world.
Italy has placed #6 after the US, Germany, UK, Austarlia and Canada. E.g. France or Japan are only on places #8 and #9. It looks like there are many enthusiastic Inventor users in Italy.