I have updated RPI trends for my portfolio and added RPI for the middle tier agencies:

http://microstock.pixelsaway.com/return-per-image-rpi-from-microstock-photography-istockphoto-shutterstock-dreamstime-and-midlow-earners/



I didn't realize that FT is falling down so badly before plotting it ...

More graphs in my blog.

I am not going to look again at these statistics before the end of the year.
Then, I will see if I am still growing or reaching plateau in terms of RPI.
I am just counting payouts on monthly basis.