41 weeks and 107 books makes for 2.61 books/week.  

Looking back over the last few weeks, I started with 106 books to read, dropped to 103, then crept back up to 108.  This week I have 107 left -- almost back to where I began despite reading far more than 3 books each week -- but I'm also considering whether I need to read  books by Chilton and Levenson, which could put me even higher than my original total.  This process of "three steps forward and six steps back" is frustrating, but I'm also trying to be thorough.

An additional factor in the reading process is that I'm becoming more discerning about whether to buy a book or order it on ILL as well as whether to study a book closely or skim quickly.   The principle furstration with books that I decide to ILL is waiting for them to arrive.