And here's the corresponding AdSense revenue chart:
But, and this is a big but, Google has recently removed my translated pages from the SERPS for a number of my sites -- but not all of my sites.
How and why and what to do about that is currently unresolved. I think that v3 of the translation script will provide a solution, but it has not yet been completed.
On the other hand, it was making me $300/day before the current issue with Google arose, and it's still making me $40/day now.
If you are not using the Translation Script now, I would recommend waiting for v3. If you are using the Translation Script now, I recommend upgrading to 2.14.