Corpus Statistics

Is data available for these questions related to schema.org?
- How many property instances have currently been marked up?
- What is the distribution of property instances across types?
-  What is the rate of growth of property instances (by month)?
- What is the total number of web sites that have created property instance
markup?
- What is the rate of growth of the number of web sites that have created
property instance markup?
 
I am interested in using the corpus of schema.org markup for a project and
having this data would help in making the decision to proceed. Additionally,
making this data available might encourage more web site developers to jump
on the schema.org bandwagon.
 
Thanks,
 
John Flynn
http://semanticsimulations.com