Last Sunday I thought the slide had finally stopped, but alas no. The week just finished was my worst since October 2010, getting on to two years ago, when I had many fewer books available.
The shortfall is in part made up by reasonably good sales on Createspace, the UK store, and Barnes & Noble, and also of course by loans on Kindle Select which aren't yet factored into the week's royalties.
I think however I will pull out of the Select program and hope that B&N sales make up for that. It will also get rid of the annoying price: 0.00 which people see even if they aren't Prime members.