How does your company stack-up in the patent-per-employee efficiency rating?

A new patent blog, Patent Chronicles, has an interesting back-of-the-envelope calculation of patent efficiency. Looking at shear numbers, IBM receives the most patents each year.  But, IBM also employs over three hundred thousand people. 

Here are some sample patenting rates on a per-employee basis for the software/computer industry:

Thus, at IBM, it takes almost 100 employees a full year to get a patent, while Sun only needs 56 employees to get the patent.  Of course, this says nothing about the quality of the patents/inventions.